CN101569847B - Filling type minisize noble gas polarization generator - Google Patents
Filling type minisize noble gas polarization generator Download PDFInfo
- Publication number
- CN101569847B CN101569847B CN 200810096610 CN200810096610A CN101569847B CN 101569847 B CN101569847 B CN 101569847B CN 200810096610 CN200810096610 CN 200810096610 CN 200810096610 A CN200810096610 A CN 200810096610A CN 101569847 B CN101569847 B CN 101569847B
- Authority
- CN
- China
- Prior art keywords
- noble gas
- gas
- polarization
- type minisize
- polarization generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a minisize noble gas polarization generator, in particular to a filling type minisize noble gas polarization generator which comprises a cavity body, a heat-insulation unit, an open basal bottle, a gas system, a heating source, an activation unit, a first magnet unit and a second magnet unit. An upper cover and a lower cover are collocated for the cavity body; the first magnet unit and the second magnet unit have the same magnetic field direction and are respectively connected to two sides of the upper cover and the lower cover; the upper cover and the lower cover haveequidistance relative to the central part of the cavity body; the heat-insulation unit is positioned in the cavity body and provided with a furnace space; the open basal bottle is positioned in the f urnace space, filled with alkali metal elements and provided with an opening; the opening is connected with a gas pipeline which is provided with a valve switch; the heating source provides heat to the furnace space; and the activation unit generates polarization laser. The invention can reduce the volume and the weight of the noble gas polarization generator and can provide polarized noble gas inreal time.
Description
Technical field
The present invention relates to a kind of minisize noble gas polarization generator, specifically, is a kind of refilling type minisize noble gas polarization generator.
Background technology
Polarization noble gas (polarized noble gases) has been widely used in Physical Experiment, neutron beam research, material science and disease medical field, for example on the related application that nuclear-magnetism develops, the signal strength signal intensity of noble gas polarization be traditional hydrogen 1 (
1H) more than 10,000 of the polarization signal times, and can let patient suck, so that the lung space is carried out to picture, solve traditional hydrogen 1 nuclear-magnetism develop (
1H MRI) signal noise ratio (signal-to-noise ratio; SNR) on the low side, and be difficult to apply to the problem in the diagnosis of lung, make the brand-new field that was beyond one's reach originally to have occurred in the application of medical treatment and material science etc.And aspect the neutron beam correlative study; The polarization of neutron in the past is dependent on the reflection of super bright mirror (supermirror) mostly to reach its purpose; But this mode has not only limited the energy and the momentum of neutron beam, has more limited the intensity (intensity) of neutron beam, the helium 3 of polarization (
3He) gas can filter neutron very effectively, reaches the purpose that makes the neutron polarization, and can not limit the energy and the momentum of neutron beam.
The polarization noble gas uses optics to intensify nuclear spin exchange process (spin-exchange optical pumping mostly; SEOP) preparation, it is under a uniform magnetic field, and heating alkali metal belongs to element makes it be evaporated to gaseous state, belongs to the steam of element again through laser-polarization alkali metal, spins exchange to reach the purpose of noble gas atomic nucleus polarization with the collision mode at last.With the helium 3 of maximum researchs (
3He) it is example that optics intensifies the nuclear spin exchange process, be included under the uniform magnetic field, with 795nm laser circle polarization illumination penetrate be filled with rubidium (Rb),
3The base bottle of the mist of He and nitrogen, 795nm laser circle polarization optical excitation Rb electronics jumps to first excited state again from being sent back to ground state from ground state (ground state) since circle polarization laser only can excite Rb electronic spin state from
Arrive
Transition, therefore last Rb electronics all intensified to
Ground state produce the Rb of polarization, after, make by the striking momentum Transfer Mechanism
3The electron spin reciprocation of the atomic nucleus of He and polarization Rb arrives with the spin states that shifts polarization Rb
3He is last, and polarization
3The He atomic nucleus produces polarization in base bottle
3He.
Because the process need of noble gas polarization carries out under uniform magnetic field, therefore a uniform magnetic field space generation device is indispensable as far as noble gas polarization generator.Known to Helmholtz (Helmholtz) coil generation uniform magnetic field space; Fig. 1 is the sketch map that Helmholtz coil produces the uniform magnetic field space; As shown in Figure 1, Helmholtz coil 100 comprises coil 110 with same diameter D and 112 parallel to putting, and equals the radius R (R=D/2) of coil 110 and 112 apart from d between the coil 110 and 112; When passing to the electric current of equidirectional, just can produce uniform magnetic field B at the intermediate space 114 of coil 110 and 112
0, for example when diameter D was 100cm, Helmholtz coil 100 can produce the uniformity about 10 easily in intermediate space 114
-4Magnetic field space.The uniformity of magnetic field space is that the difference of maximum and minimum of a value in magnetic field in the said magnetic field space is divided by mean value.Yet; Helmholtz coil 100 is through producing uniform magnetic field by galvanization; Therefore need the control of stable power supply and environment temperature, to avoid influencing because of the change of electric current or temperature the stability in magnetic field, the manufacturing cost of required equipment cost and polarization noble gas is all higher.In addition; Because Helmholtz coil 100 is bulky and magnetic field its generation can receive the influence of electric product, electromagnetic field and ferromagnetic material on every side; Therefore in open system, be difficult to produce uniform magnetic field, this makes Helmholtz coil 100 to move easily, and the limited use that causes noble gas polarization generator is in magnetic field space generation device (for example Helmholtz coil 100); After often must the noble gas of polarization being taken out from the magnetic field space generation device; Put into small-sized uniform magnetic field (for example solenoid or permanent magnet case) again and transport, cause the resting period of polarization noble gas or relaxation time (relaxation time) T1 to reduce, for example move to the process of small-sized uniform magnetic field from Helmholtz coil 100 taking-ups at the polarization noble gas; The noble gas of polarization can receive the interference in surrounding environment magnetic field; For example pass through non-uniform magnetic field A or B, and the influence of hand contact, make the polarization of noble gas decay.Secondly, as shown in Figure 2, Fig. 2 is solenoidal sketch map; Wherein solenoid 200 is made spiral surrounding in aluminum pipe 210 outsides with enamel-covered wire 220, and the distance between the adjacent enamel-covered wire 220 is identical, provides electric current to enamel-covered wire 220 through the current supply (not shown); To produce uniform magnetic field; Yet aluminum pipe 210 is about the 20-30 kilogram with the weight of enamel-covered wire 220, and needs the collocation current supply could produce magnetic field.And it is as shown in Figure 3; Fig. 3 is the sketch map of permanent magnet case; Wherein permanent magnet case 250 comprises that a non-ferromagnetic metal shell 260 and several permanent magnets 270 are positioned on the non-ferromagnetic metal shell 260; In order to form the magnetic field that is evenly distributed in the space of depositing at said base bottle, the degree of depth of the length of permanent magnet 270 and shell 260 all must be enough big, and this weight that yet means permanent magnet case 250 is not light.In other words, light and handy at last even solenoid 200 and the weight of permanent magnet case 250 are compared with the weight of Helmholtz coil 200-300 kilogram, be extremely inconvenient but will do regular transporting.
Therefore known noble gas polarization generator exists above-mentioned all inconvenience and problem.
Summary of the invention
The object of the invention is to propose the little and convenient refilling type minisize noble gas polarization generator of using of a kind of space requirement.
Another object of the present invention is to propose a kind of refilling type minisize noble gas polarization generator that transports easily.
Another purpose of the present invention, be to propose a kind of combination gas fill system and in real time (InSitu) the refilling type minisize noble gas polarization generator of polarization noble gas is provided.
For realizing above-mentioned purpose, technical solution of the present invention is:
A kind of refilling type minisize noble gas polarization generator comprises a cavity, a heat-insulation unit, and an open base bottle, a gas system, a heating source and intensifies the unit, wherein,
Said cavity disposes made loam cake of high permeability material and lower cover; And identical first and second magnet unit of magnetic direction is in order to produce a magnetic field; Said first and second magnet unit is connected to the both sides of said loam cake and said lower cover respectively; The cores of said loam cake and the said relatively cavity of said lower cover is that equidistance produces a uniform magnetic field space to guide said magnetic field in said inside cavity, and forms screen effect;
Said heat-insulation unit is positioned at said cavity, and has a furnace space temperature is remained in the predetermined scope;
Said open base bottle is arranged in said furnace space; And in be filled with alkali metal; Said base bottle is provided with an opening; Said opening connects one first gas line, and the said first gas line place is provided with a valve switch, for filling a noble gas or discharging the said noble gas of polarization;
Said gas system is supplied said noble gas to said open base bottle through said valve switch, said first gas line and said opening;
Said heating source provide heat to the said furnace space with the temperature of keeping said open base bottle in said predetermined scope, make said alkali metal be evaporated to the alkali metal steam;
The said unit that intensifies passes through said open base bottle in order to produce a specific wavelength and the polarization laser identical with the magnetic direction of said magnetic field space, with the interior said noble gas of the said open base bottle of polarization.
Refilling type minisize noble gas polarization generator of the present invention can also adopt following technical measures further to realize.
Aforesaid refilling type minisize noble gas polarization generator; Wherein said loam cake has first and second extension edge lid; Said lower cover has the 3rd and the 4th extension edge lid; Said first magnet unit is between the said first and the 3rd extension edge lid, and said second magnet unit is between the said second and the 4th extension edge lid.
Aforesaid refilling type minisize noble gas polarization generator, wherein said first and second magnet unit respectively comprises:
One first permanent magnet;
One second permanent magnet;
One sidewall, said sidewall is processed by said high permeability material, and between said first and second permanent magnet, to be connected in series said first and second permanent magnet.
Aforesaid refilling type minisize noble gas polarization generator, wherein said sidewall have first and second extension edge lid and engage said first and second permanent magnet respectively.
Aforesaid refilling type minisize noble gas polarization generator, wherein said high permeability material comprises dilval.
Aforesaid refilling type minisize noble gas polarization generator wherein also comprises:
One second gas line is connected between said gas system and said first gas line;
One second valve switch is positioned at said second gas line, to control being communicated with between said gas system and said first gas line.
Aforesaid refilling type minisize noble gas polarization generator wherein more comprises:
One second gas line connects said first gas line, in order to transport the said noble gas of polarization;
It is online that one second valve switch is positioned at said second flue, to control the connection between said first and second gas line;
One cooling device is positioned at said second gas line, with the said alkali metal steam that condenses.
Aforesaid refilling type minisize noble gas polarization generator comprises more that wherein a draw-out device connects said second gas line, to take out in the said open base bottle the said noble gas of polarization.
Aforesaid refilling type minisize noble gas polarization generator, wherein said gas system comprises:
One noble gas source of supply is in order to supply said noble gas;
One buffer gas source of supply is in order to provide buffer gas;
One gas purifier is connected between said noble gas source of supply and said buffer gas source of supply and the said open base bottle, in order to purify said noble gas and said buffer gas.
Aforesaid refilling type minisize noble gas polarization generator, the wherein said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflect said laser beam, makes said laser beam through said open base bottle;
One polar biased unit is between said laser and said open base bottle, with the said laser beam of polar biased.
Aforesaid refilling type minisize noble gas polarization generator, wherein said reflector element comprises speculum or prism.
Aforesaid refilling type minisize noble gas polarization generator, the wherein said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflection and the said laser beam of polar biased, makes said laser beam through said open base bottle.
Aforesaid refilling type minisize noble gas polarization generator comprises more that wherein a heat insulation layer is between said cavity and said heat-insulation unit.
Aforesaid refilling type minisize noble gas polarization generator wherein more comprises a malcoils, is positioned near the said open base bottle, in order to emission and received RF signal, to detect the polarization of said noble gas.
A kind of refilling type minisize noble gas polarization generator comprises a cavity, a heat-insulation unit, and one is streaming base bottle, a gas system, a heating source and intensifies the unit, it is characterized in that:
Said cavity is provided with by high permeability material made loam cake and lower cover; And identical first and second magnet unit of magnetic direction is in order to produce a magnetic field; Said first and second magnet unit is connected to the both sides of said loam cake and said lower cover respectively; The core of said loam cake and the said relatively cavity of said lower cover is that equidistance produces a uniform magnetic field space to guide said magnetic field in said inside cavity, and forms screen effect;
Said heat-insulation unit is positioned at said cavity, is provided with a furnace space temperature is remained in the predetermined scope;
Said is streaming base bottle; Comprise an optics and intensify the district and be arranged in said furnace space, be filled with alkali metal in it and have one first opening, a filtering area is positioned at outside the said furnace space and intensifies the district with said optics and is connected; It has one second opening; Said filtering area has a cooling mechanism can be with the alkali metal steam in this filtration of condensing, and one first gas line connects said first opening, is provided with one first valve switch above it for filling a noble gas; And one second gas line connect said second opening, establish above it and have one second valve switch for the said noble gas that discharges polarization;
Said gas system, supplying said noble gas extremely said via said first valve switch, said first gas line and said first opening is in the streaming base bottle;
Said heating source, in order to provide heat to the said furnace space to keep temperature that said optics intensifies the district in said predetermined scope, make said alkali metal be evaporated to said alkali metal steam;
The said unit that intensifies, in order to produce a specific wavelength and the polarization laser identical with the magnetic direction of said magnetic field space intensifies the district through said optics, said with polarization is said noble gas in the streaming base bottle.
Refilling type minisize noble gas polarization generator of the present invention can also adopt following technical measures further to realize.
Aforesaid refilling type minisize noble gas polarization generator; Wherein said loam cake has first and second extension edge lid; Said lower cover has the 3rd and the 4th extension edge lid; Said first magnet unit is between the said first and the 3rd extension edge lid, and said second magnet unit is between the said second and the 4th extension edge lid.
Aforesaid refilling type minisize noble gas polarization generator, wherein said first and second magnet unit respectively comprises:
One first permanent magnet;
One second permanent magnet;
One sidewall, said sidewall is made up of said high permeability material, and between said first and second permanent magnet, to be connected in series said first and second permanent magnet.
Aforesaid refilling type minisize noble gas polarization generator, wherein said sidewall have first and second extension edge lid and engage said first and second permanent magnet respectively.
Aforesaid refilling type minisize noble gas polarization generator, wherein said high permeability material comprises dilval.
Aforesaid refilling type minisize noble gas polarization generator, wherein said filtering area is positioned at the top that said optics intensifies the district.
Aforesaid refilling type minisize noble gas polarization generator, wherein said filtering area comprise a cooling acquisition zone, and it has the cooling collar of an outer T-Ring packet mode, with the said alkali metal steam that condenses.
Aforesaid refilling type minisize noble gas polarization generator; Comprise more that wherein a buffering area is between said cooling acquisition zone and said second opening; With the said alkali metal steam of further collection; And its wall has the particle of less said alkali metal, can be used as the buffering temporarily providing room of the said noble gas of good polarization.
Aforesaid refilling type minisize noble gas polarization generator, wherein said first opening is positioned at the bottom that said optics intensifies the district.
Aforesaid refilling type minisize noble gas polarization generator, wherein said first gas line have a heating buffering and partly are connected to said first opening through said furnace space.
Aforesaid refilling type minisize noble gas polarization generator, wherein said heating buffering partly comprises the helical form gas line.
Aforesaid refilling type minisize noble gas polarization generator wherein more comprises:
One the 3rd gas line is connected between said first and second gas line;
One the 3rd valve switch is positioned at said the 3rd gas line, to control the connection between said second and third tracheae line;
One pump at said the 3rd gas line and between said the 3rd valve switch and said first gas line, circulates so that said noble gas intensifies between the district at said filtering area and said optics.
Aforesaid refilling type minisize noble gas polarization generator comprises more that wherein one the 4th valve switch is at said the 3rd pipeline and between said pump and said first pipeline.
Aforesaid refilling type minisize noble gas polarization generator, wherein said gas system comprises:
One noble gas source of supply is in order to supply said noble gas;
One buffer gas source of supply is in order to provide buffer gas;
One gas purifier, be connected said noble gas source of supply and said buffer gas source of supply and said be between the streaming base bottle, in order to purify said noble gas and said buffer gas.
Aforesaid refilling type minisize noble gas polarization generator, the wherein said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflect said laser beam, makes said laser beam intensify the district through said optics;
One polar biased unit, said laser and said be between the streaming base bottle, with the said laser beam of polar biased.
Aforesaid refilling type minisize noble gas polarization generator, wherein said reflector element comprises speculum or prism.
Aforesaid refilling type minisize noble gas polarization generator, the wherein said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflection and the said laser beam of polar biased, makes said laser beam intensify the district through said optics.
Aforesaid refilling type minisize noble gas polarization generator comprises more that wherein a heat insulation layer is between said cavity and said heat-insulation unit.
Aforesaid refilling type minisize noble gas polarization generator wherein more comprises a malcoils, is positioned near the said filtering area, in order to emission and received RF signal, to detect the polarization of said noble gas.
After adopting technique scheme, refilling type minisize noble gas polarization generator of the present invention has the following advantages:
1. significantly reduce the volume and the weight of noble gas polarization generator, be convenient for carrying or carry.
2. the noble gas of polarization can be provided in real time, the convenience that increase to use and reducing cost.
Description of drawings
Fig. 1 is the sketch map that Helmholtz coil produces the uniform magnetic field space;
Fig. 2 is solenoidal sketch map;
Fig. 3 is the sketch map of permanent magnet case;
Fig. 4 is the sketch map of refilling type minisize noble gas polarization generator of the present invention;
Fig. 5 is the side view of refilling type minisize noble gas polarization generator of the present invention;
Fig. 6 is the sketch map of cavity in the refilling type minisize noble gas polarization generator of the present invention;
Fig. 7 is the front view of cavity in the refilling type minisize noble gas polarization generator of the present invention;
Fig. 8 is the sketch map of gas system;
Fig. 9 is first embodiment with refilling type minisize noble gas polarization generator of open basic bottle sketch map;
Figure 10 is with the sketch map of cavity as tote box;
Figure 11 is second embodiment with refilling type minisize noble gas polarization generator of open base bottle;
Figure 12 is the 3rd embodiment with refilling type minisize noble gas polarization generator of open base bottle;
Figure 13 is the sketch map with the refilling type minisize noble gas polarization generator that is streaming base bottle.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is illustrated further.
See also Fig. 4 and Fig. 5, Fig. 4 is the sketch map of refilling type minisize noble gas polarization generator of the present invention at present, and Fig. 5 is the side view of refilling type minisize noble gas polarization generator of the present invention; As shown in the figure, said refilling type minisize noble gas polarization generator 300 comprises a cavity 310, has a uniform magnetic field space in it; 310 pairs of said magnetic field spaces of said cavity form shielding, and a heat-insulation unit (for example holding furnace) 324 is positioned at cavity 310, and it has a furnace space 325 temperature is remained within the predetermined scope; One heat insulation layer 320 is between cavity 310 and heat-insulation unit 324; One base bottle 328 is arranged in furnace space 325, loads noble gas (for example helium 3 or xenon 129), alkali metal (for example rubidium) and buffer gas (for example nitrogen) in the base bottle 328, and a gas system (not shown) is in order in supply noble gas to the base bottle 328; One heating source 332 connect furnace space 325 with the temperature of keeping base bottle 328 within said predetermined scope; Make the alkali metal in the base bottle 328 be evaporated to gaseous state, further to block the transmission of heat, a laser 336 provides a laser beam 334 to a heat insulating mattress 330 between heat insulation layer 320 and heat-insulation unit 324; One reflector element (for example speculum or prism) 322 is positioned at cavity 310; For example base bottle 328, one polar biased devices 338 are passed through in order to reflect beams of laser light 334 on the laser path between laser 336 and the base bottle 328 to form the laser path identical with the magnetic direction of said magnetic field space in the top of heat-insulation unit 324; For example in the place ahead of laser 336 or between reflector element 322 and base bottle 328; With polarization laser beam 334, making the laser that gets into base bottle 328 is polarization laser, with the alkali metal in the polar biased base bottle 328; For example the shared eletron with alkali metal intensifies the spin states to single ground state; The alkali metal shared eletron of polarization and the nucleus collision of noble gas atom produce the transfer of spin polar biased, form the noble gas of polarization, and a malcoils 326 is positioned near the base bottle 328; In order to emission and reception RF signal, to detect the polarization of noble gas in the base bottle 328.In the present embodiment; Laser 336, reflector element 322 and polar biased device 338 constitute one and intensify the unit, in order to produce a specific wavelength and the polarization laser identical with the magnetic direction of said magnetic field space through base bottle 328, with the noble gas in the polarization base bottle 328; Heat-insulation unit 324 is made up of the material of glass, calcium silicate board or any tool heat insulation effect; In said preset range, heating source 332 comprises the pipeline or the device that can provide constant hot blast or hot material to add hot radical bottle 328 with the temperature that keeps furnace space 325, for example one be connected to the heating air gun quartz ampoule; And heat insulation layer 320 maybe can be made up of the heat-transfer arrangement that the torrid zone is walked insulation; For example on cavity 310 inwalls around glass tube and in said glass tube the gas through temperature control, effectively to take away outer heat of loosing, form even temperature and distribute; Avoid causing the uniformity deterioration in cavity 310 internal magnetic field spaces, influence the efficient of polarization because of uneven Temperature Distribution.In various embodiment; The polar biased device 338 that intensifies in the unit comprises polarizing board (for example
ripple plate) or the round polar biased device of being made up of spectroscope and
ripple plate, gets into base bottle 328 polar biased alkali metal wherein to produce round polar biased laser.In another embodiment, intensify the reflector element 322 that the unit comprises laser 336 and has polar biased laser beam 334 functions, thereby omit polar biased device 338.
See also Fig. 6 and Fig. 7 again, Fig. 6 is the sketch map of cavity in the refilling type minisize noble gas polarization generator of the present invention, and Fig. 7 is the front view of cavity in the refilling type minisize noble gas polarization generator of the present invention; As shown in the figure; In one embodiment, said cavity 310 comprises by high permeability material (μ-metal), for example dilval; Loam cake 342 and the lower cover 344 processed; The cores of the two relative cavity 310 is an equidistance, for example has identical size, and the both sides that magnet unit 370 and 372 is connected to loam cake 342 and lower cover 344 are as magnetic source.Magnet unit 370 comprises permanent magnet 316 and 318, and a sidewall 348 between permanent magnet 316 and 318, in order to serial connection permanent magnet 316 and 318.Magnet unit 372 comprises permanent magnet 312 and 314, and a sidewall 346 between permanent magnet 312 and 314, in order to serial connection permanent magnet 312 and 314.Magnet unit 370 and 372 magnetic direction are identical, and for example the N extreme direction 374 of permanent magnet 312-318 all makes progress, and sidewall 346 and 348 is processed by the high permeability material.Preferred sidewall 348 has extension edge lid 358 and engages permanent magnet 316 and 318 respectively with 360; So that it is serially connected, sidewall 346 has extension edge lid 354 and 356 and engages permanent magnet 312 and 314 respectively, so that it is serially connected; Loam cake 342 has extension edge lid 350 and 352; Lower cover 344 has extension edge lid 362 and 364, and magnet unit 370 is between extension edge lid 352 and 364, and magnet unit 372 is between extension edge lid 350 and 362.The magnetic line of force of permanent magnet 312-318 is through the guiding of sidewall 346 and 348, loam cake 342 and lower cover 344; Form the uniform magnetic field space that magnetic direction is above-below direction (present embodiment is for downwards) in cavity 310 cores; For example when the horizontal range of cavity 310 is 36cm, between horizontal range 8cm to 28cm, has uniform magnetic field B
0', being directed downwards of its magnetic line of force 376, and magnetic field B
0' uniformity of magnetic field between horizontal range 13cm to 23cm is less than 10
-4In one embodiment, adjust said uniform magnetic field B
0' intensity be 10 Gausses, with the order-of-magnitude agreement of the standard magnetic field pulse guide field of keeping the neutron polarization (guide field).In another embodiment, permanent magnet 312-318 and engaging zones 350-364 are bonded together via adhesive, perhaps via being bonded together like frame for movements such as screw or clamps.In various embodiment; Can be through the quantity of sidewall and permanent magnet in the adjustment magnet unit 370 and 372; Produce required magnetic field space; For example magnet unit 370 and 372 can be respectively for an independent permanent magnet directly is connected to loam cake 342 and lower cover 344, or the permanent magnet more than two is serially connected via a plurality of sidewalls, is connected with lower cover 344 again with to loam cake 342.
Other sees also Fig. 8, and Fig. 8 is the sketch map of gas system, and is as shown in the figure; In one embodiment, the gas system 400 in said supply noble gas to the base bottle 328 comprises a noble gas source of supply 410 in order to noble gas to be provided, for example helium 3 or xenon 129; One buffer gas source of supply 420 is in order to provide buffer gas, and for example nitrogen, an and gas purifier 430 is connected between base bottle 328 and noble gas source of supply 410 and the buffer gas source of supply 420; After noble gas and buffer gas are purified; For example remove aqueous vapor and oxygen in noble gas and the buffer gas, recharge to base bottle 328, to reduce the unfavorable factor in the noble gas polarization process.Wherein connect with gas line 440 between each assembly of gas system 400, and make noble gas source of supply 410, buffer gas source of supply 420 and gas purifier 430 form independently unit through valve switch 450-458.
See also Fig. 9 again, Fig. 9 is first embodiment with refilling type minisize noble gas polarization generator of open basic bottle sketch map, and is as shown in the figure; In one embodiment, said base bottle 328 is an open base bottle (open cell), and it has an opening 520; One gas line, 550 connection opening 520; And one valve switch 510 be positioned on the gas line 550 filling alkali metal 530, for example rubidium in the base bottle 328.At first; Base bottle 328 is taken out from cavity 310, and be connected to gas system as shown in Figure 8 400, then Open valve switch 510 via gas line 550; Make gas get into base bottle 328 and carry out the filling of gas via gas line 550 and opening 520; After gas filling was accomplished, valve-off switch 510 was also put back to base bottle 328 in the cavity 310, subsequently via heating source 332 supply hot blast to furnace space 325 to keep the temperature of base bottles 328; Make the alkali metal 730 in the base bottle 328 be evaporated to the alkali metal steam, and carry out the polarization of noble gas with laser beam 334.
After the polarization of noble gas is accomplished; Remove the heat insulation layer 330 under speculum 322, heating source 332 and the heat-insulation unit 324, shown in figure 10, Figure 10 is with the sketch map of cavity as tote box; Then use whippy material (for example foam) to be filled between base bottle 328, heat-insulation unit 324 and the cavity 310 as filler 540; Avoid collision with fixed base bottle 328, and use cavity 310 as tote box, the base bottle 328 that will have the polarization noble gas is transported to the place that needs; Open valve switch 510 during use makes the polarization noble gas in the base bottle 328 disengage through gas line 550 from opening 520.After the polarization noble gas disengages, remove filler 540, take out base bottle 328; Via gas line 550 base bottle 328 is connected to gas system as shown in Figure 8 and loads gas again; After treating that the gas filling is accomplished, base bottle 328, speculum 322, heating source 332 are put back in the cavity 310 with heat insulation layer 330, as shown in Figure 9; To carry out the polarization of noble gas, produce the polarization noble gas once more.In the present embodiment; Base bottle 328 is an assembly independently, and cavity 310 also can be used as the tote box of polarization noble gas except as the generation device of uniform magnetic field space; Because cavity 310 has uniform magnetic field and shield effectiveness; Therefore the noble gas of polarization can not receive the influence of non-uniform magnetic field or outside electromagnetic interference, and cause the decay of polarization noble gas in the process of transporting.
Shown in figure 11; Figure 11 has open basic bottle refilling type minisize noble gas partially in another embodiment; Said base bottle 328 is for being fixed in the open base bottle in the furnace space 325, and it has an opening 520, one gas lines 551 connection opening 520; And one valve switch 510 be positioned on the gas line 551; Gas line 551 extends cavity 310, and valve switch 510 is positioned at outside the cavity 310, and gas line 610 is connected between gas system 650 (gas system 400 for example shown in Figure 8) and the gas line 551; Have being communicated with between a valve switch 632 control gas systems 650 and the gas line 551 on it, gas is filled to the base bottles 328 through gas line 610, valve switch 632 and 510, gas line 550 and opening 520 from gas system 650.In various embodiment; Gas line 620 connects gas line 551 so that the polarization noble gas in the base bottle 328 is transported to place to use 640; Nuclear-magnetism (MRI) inspection chamber that develops for example; Valve switch 634 on the gas line 620 with control being communicated with between the gas line 551 and 620, valve switch 636 on the gas line 620 to control being communicated with between gas line 620 and the place to use 640, cooling device 622 is positioned on the gas line 620; It can by one cooling agent (for example liquid nitrogen) be housed container; And one the pipeline (for example U type pipe) that is immersed in the cooling agent constitute, become solid-state in order to devaporation, to avoid at the polarization noble gas when base bottle 328 is delivered to place to use 640 with alkali metal 530; The steam of alkali metal 530 causes bad influence along with the polarization noble gas is transported to place to use 640 together, is for example accepted in patient's suction body of nuclear-magnetism development inspection.Because therefore the pressure in the base bottle 328 can be delivered to place to use 640 with the polarization noble gas through pressure reduction greater than 1 atmospheric pressure.Gas line 551 and 620 uses the material that can not influence gas polarization, for example Pyrex glass or Teflon.The preferably; Gas line 551 connects gas line 610 and 620 simultaneously and constitutes refilling type minisize noble gas polarization generator 600; And it is erected at the next door of place to use 640; Noble gas continues to be filled to the base bottle 328 and by polarization from gas system 650 via Open valve switch 510 and 632, via Open valve 510,634 and 636 polarization noble gas to place to use 610 is provided immediately, avoids the polarization noble gas because of packing or transport and decay.
Shown in figure 12; Figure 12 is the 3rd embodiment with refilling type minisize noble gas polarization generator of open base bottle; Draw-out device 660 is connected to gas line 620 to draw the polarization noble gas in the base bottle 328 through valve 638; Polarization noble gas in the base bottle 328 is taken out fully, be delivered to place to use 640 again.Draw-out device 660 is a kind ofly to move to the left or to the right with pneumatic means 664 driven plunger 662, gas is extracted or gas delivered to out the device in required place from base bottle 328.The refilling type minisize noble gas polarization generator 600 of comparing Figure 11 utilizes pressure reduction to carry the mode of polarization noble gas to cause residual 1 atmospheric polarization noble gas in the base bottle 328; The polarization noble gas that utilizes draw-out device 660 to extract earlier in the base bottle 328 is carried again, can effectively increase spendable polarization noble gas.
Figure 13 is the sketch map with the refilling type minisize noble gas polarization generator that is streaming base bottle.Shown in figure 13; In various embodiment; The base bottle 328 of refilling type minisize noble gas polarization generator 700 is for being streaming base bottle (flow cell); It comprises one have opening 752 optics intensify the district and 750 be arranged in furnace space 325, be filled with filtering area 770 that alkali metal 530, has an opening 762 in it and be positioned at outside the furnace space 325 and intensify district 750 and be connected with optics; One gas line, 710 connection opening 752 and gas system 650; It has being communicated with between a valve switch 720 control gas systems 650 and the opening 752, gas is filled to the base bottles 328 through gas line 710, valve switch 720 and opening 752 from gas system 650, and one has gas line 712 connection opening 762 of valve switch 726; So that the polarization noble gas in the base bottle 328 is transported to place to use 640 from opening 762 through gas line 712 and valve switch 726, nuclear-magnetism (MRI) inspection chamber that develops for example.Wherein, filtering area 770 is in order to gather the steam of alkali metal 530, avoids at the polarization noble gas when base bottle 328 is delivered to place to use 640, and the steam of alkali metal 530 is along with the polarization noble gas is transported to place to use 640 together.In one embodiment; Filtering area 770 comprise one intensify district's 750 adjacency with optics zone 730, an and cooling device 732, the cooling collar of for example outer T-Ring packet mode; Be coated on outside the zone 730; Formed cooling acquisition zone condenses the steam of alkali metal 530 in this zone, and can be along with the polarization noble gas is transported to place to use 640 together.In another embodiment; Filtering area 770 more comprises a buffering area 760 between zone 730 and opening 762, and it is preceding earlier through buffering area 760, with the steam of further collection alkali metal 530 to make the polarization noble gas leave base bottle 328; Because the wall of buffering area 760 has the particle of less alkali metal 530; So said wall is level and smooth, be difficult for causing the relaxation time T1 of polarization noble gas to reduce, therefore can be used as the buffering temporarily providing room of good polarization noble gas.In the present embodiment; Filtering area 770 is positioned at the top that optics intensifies district 750; After the steam of alkali metal 530 was condensed into the particle of alkali metal 530 via filtering area 770, the influence that receives gravity was got back to optics and is intensified district 750, makes the polarization of noble gas can continue to carry out; Can not intensify the steam minimizing of the alkali metal 530 in the district 750 because of optics, cause the deterioration of efficiency or the interruption of noble gas polarization.Opening 752 is positioned at the bottom that optics intensifies district 750; Gas line 710 has a heating buffering part 711; Helical form gas line for example; Be connected to opening 752 through furnace space 325, make the temperature of the gas that gets into base bottle 328 close, cause alkali metal 730 devaporations to avoid the lower gas of temperature to get in the base bottle 328 with the temperature of base bottle 328.In addition; Because being arranged in optics, the steam major part of alkali metal 530 intensifies district 750; Therefore the polarization of noble gas mainly intensifies in the district 750 at optics and carries out; For avoiding in the filtering area 770 existing not by the noble gas of polarization, the gas that causes at the beginning being delivered to via gas line 712 place to use 640 is the non-polarization noble gas, and refilling type minisize noble gas polarization generator 800 comprises that more a gas line 714 is connected between gas line 710 and 712; It has valve switch 724 with being communicated with between the control tracheae line 712 and 714; And one pump 740 between valve switch 724 and gas line 710 and on gas line 740, make noble gas intensify circulation between the district 750, and then make and be full of the polarization noble gas in the filtering area 770 at filtering area 770 and optics.Preferably malcoils 326 is placed near the filtering area 770,,, guarantee that the polarization noble gas that is delivered to place to use 640 has required polarization degree to detect the polarization of noble gas in order to emission and received RF signal.In one embodiment, between gas line 710 and pump 740, install a valve switch 722 additional, when avoiding gas to be filled in the base bottle 328, pump 740 is caused damage because of pressure is excessive.
Above embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technical staff in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
The element numbers explanation
100 Helmholtz coils
110 coils
112 coils
200 solenoids
210 aluminum pipes
220 enamel-covered wires
250 permanent magnet casees
260 non-ferromagnetic metal shells
270 permanent magnets
300 refilling type minisize noble gas polarization generators
310 cavitys
The 312-318 permanent magnet
320 heat insulation layers
322 reflector elements
324 heat-insulation unit
325 furnace space
326 malcoilses
328 base bottles
330 heat insulating mattress
332 heating sources
334 laser beams
336 laser
338 polarization devices
342 loam cakes
344 lower covers
The 346-348 sidewall
The 350-364 engaging zones
374 N extreme directions
376 magnetic lines of force
400 gas systems
410 noble gas sources of supply
420 buffer gas sources of supply
430 gas purifiers
440 gas lines
The 450-458 valve switch
510 valve switch
520 openings
530 alkali metals
540 fillers
550 gas lines
551 gas lines
600 refilling type minisize noble gas polarization generators
The 610-620 gas line
622 cooling devices
The 632-638 valve
640 places to use
650 gas systems
660 draw-out devices
662 pistons
664 pneumatic means
700 refilling type minisize noble gas polarization generators
710 gas lines
711 heating bufferings partly
The 712-714 gas line
The 720-726 valve switch
730 zones
732 cooling devices
740 help the Pu
750 optics intensify the district
752 openings
760 buffering areas
762 openings
770 filtering areas
Claims (33)
1. a refilling type minisize noble gas polarization generator comprises a cavity, a heat-insulation unit, and an open base bottle, a gas system, a heating source and intensifies the unit, it is characterized in that:
Said cavity disposes made loam cake of high permeability material and lower cover; And identical first and second magnet unit of magnetic direction is in order to produce a magnetic field; Said first and second magnet unit is connected to the both sides of said loam cake and said lower cover respectively; The core of said loam cake and the said relatively cavity of said lower cover is that equidistance produces a uniform magnetic field space to guide said magnetic field in said inside cavity, and forms screen effect;
Said heat-insulation unit is positioned at said cavity, and has a furnace space temperature is remained in the predetermined scope;
Said open base bottle is arranged in said furnace space; And in be filled with alkali metal; Said base bottle is provided with an opening; Said opening connects one first gas line, and the said first gas line place is provided with a valve switch, for filling a noble gas or discharging the said noble gas of polarization;
Said gas system is supplied said noble gas to said open base bottle through said valve switch, said first gas line and said opening;
Said heating source provide heat to the said furnace space with the temperature of keeping said open base bottle in said predetermined scope, make said alkali metal be evaporated to the alkali metal steam;
The said unit that intensifies passes through said open base bottle in order to produce a specific wavelength and the polarization laser identical with the magnetic direction of said magnetic field space, with the interior said noble gas of the said open base bottle of polarization.
2. refilling type minisize noble gas polarization generator as claimed in claim 1; It is characterized in that; Said loam cake has first and second extension edge lid; Said lower cover has the 3rd and the 4th extension edge lid, and said first magnet unit is between the said first and the 3rd extension edge lid, and said second magnet unit is between the said second and the 4th extension edge lid.
3. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, said first and second magnet unit respectively comprises:
One first permanent magnet;
One second permanent magnet;
One sidewall, said sidewall is processed by said high permeability material, and between said first and second permanent magnet, to be connected in series said first and second permanent magnet.
4. refilling type minisize noble gas polarization generator as claimed in claim 3 is characterized in that, said sidewall has first and second extension edge lid and engages said first and second permanent magnet respectively.
5. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, said high permeability material comprises dilval.
6. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, also comprises:
One second gas line is connected between said gas system and said first gas line;
One second valve switch is positioned at said second gas line, to control being communicated with between said gas system and said first gas line.
7. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, more comprises:
One second gas line connects said first gas line, in order to transport the said noble gas of polarization;
One second valve switch is positioned at said second gas line, to control the connection between said first and second gas line;
One cooling device is positioned at said second gas line, with the said alkali metal steam that condenses.
8. refilling type minisize noble gas polarization generator as claimed in claim 7 is characterized in that, comprises that more a draw-out device connects said second gas line, to take out in the said open base bottle the said noble gas of polarization.
9. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, said gas system comprises:
One noble gas source of supply is in order to supply said noble gas;
One buffer gas source of supply is in order to provide buffer gas;
One gas purifier is connected between said noble gas source of supply and said buffer gas source of supply and the said open base bottle, in order to purify said noble gas and said buffer gas.
10. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, the said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflect said laser beam, makes said laser beam through said open base bottle;
One polar biased unit is between said laser and said open base bottle, with the said laser beam of polar biased.
11. refilling type minisize noble gas polarization generator as claimed in claim 10 is characterized in that said reflector element comprises speculum or prism.
12. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, the said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflection and the said laser beam of polar biased, makes said laser beam through said open base bottle.
13. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, comprises that more a heat insulation layer is between said cavity and said heat-insulation unit.
14. refilling type minisize noble gas polarization generator as claimed in claim 1 is characterized in that, more comprises a malcoils, is positioned near the said open base bottle, in order to emission and received RF signal, to detect the polarization of said noble gas.
15. a refilling type minisize noble gas polarization generator comprises a cavity, a heat-insulation unit, and one is streaming base bottle, a gas system, a heating source and intensifies the unit, it is characterized in that:
Said cavity is provided with by high permeability material made loam cake and lower cover; And identical first and second magnet unit of magnetic direction is in order to produce a magnetic field; Said first and second magnet unit is connected to the both sides of said loam cake and said lower cover respectively; The core of said loam cake and the said relatively cavity of said lower cover is that equidistance produces a uniform magnetic field space to guide said magnetic field in said inside cavity, and forms screen effect;
Said heat-insulation unit is positioned at said cavity, is provided with a furnace space temperature is remained in the predetermined scope;
Said is streaming base bottle; Comprise an optics and intensify the district and be arranged in said furnace space, be filled with alkali metal in it and have one first opening, a filtering area is positioned at outside the said furnace space and intensifies the district with said optics and is connected; It has one second opening; Said filtering area has a cooling mechanism can be with the alkali metal steam in this filtration of condensing, and one first gas line connects said first opening, is provided with one first valve switch above it for filling a noble gas; And one second gas line connect said second opening, establish above it and have one second valve switch for the said noble gas that discharges polarization;
Said gas system, supplying said noble gas extremely said via said first valve switch, said first gas line and said first opening is in the streaming base bottle;
Said heating source, in order to provide heat to the said furnace space to keep temperature that said optics intensifies the district in said predetermined scope, make said alkali metal be evaporated to said alkali metal steam;
The said unit that intensifies, in order to produce a specific wavelength and the polarization laser identical with the magnetic direction of said magnetic field space intensifies the district through said optics, said with polarization is said noble gas in the streaming base bottle.
16. refilling type minisize noble gas polarization generator as claimed in claim 15; It is characterized in that; Said loam cake has first and second extension edge lid; Said lower cover has the 3rd and the 4th extension edge lid, and said first magnet unit is between the said first and the 3rd extension edge lid, and said second magnet unit is between the said second and the 4th extension edge lid.
17. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said first and second magnet unit respectively comprises:
One first permanent magnet;
One second permanent magnet;
One sidewall, said sidewall is made up of said high permeability material, and between said first and second permanent magnet, to be connected in series said first and second permanent magnet.
18. refilling type minisize noble gas polarization generator as claimed in claim 17 is characterized in that, said sidewall has first and second extension edge lid and engages said first and second permanent magnet respectively.
19. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said high permeability material comprises dilval.
20. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that said filtering area is positioned at the top that said optics intensifies the district.
21. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said filtering area comprises a cooling acquisition zone, and it has the cooling collar of an outer T-Ring packet mode, with the said alkali metal steam that condenses.
22. refilling type minisize noble gas polarization generator as claimed in claim 21; It is characterized in that; Comprise that more a buffering area is between said cooling acquisition zone and said second opening; With the said alkali metal steam of further collection, and its wall has the particle of less said alkali metal, can be used as the buffering temporarily providing room of the said noble gas of good polarization.
23. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said first opening is positioned at the bottom that said optics intensifies the district.
24. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said first gas line has a heating buffering and partly is connected to said first opening through said furnace space.
25. refilling type minisize noble gas polarization generator as claimed in claim 24 is characterized in that, said heating buffer portion comprises the helical form gas line.
26. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, more comprises:
One the 3rd gas line is connected between said first and second gas line;
One the 3rd valve switch is positioned at said the 3rd gas line, to control the connection between said second and third tracheae line;
One pump at said the 3rd gas line and between said the 3rd valve switch and said first gas line, circulates so that said noble gas intensifies between the district at said filtering area and said optics.
27. refilling type minisize noble gas polarization generator as claimed in claim 26 is characterized in that, comprises that more one the 4th valve switch is at said the 3rd pipeline and between said pump and said first pipeline.
28. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, said gas system comprises:
One noble gas source of supply is in order to supply said noble gas;
One buffer gas source of supply is in order to provide buffer gas;
One gas purifier, be connected said noble gas source of supply and said buffer gas source of supply and said be between the streaming base bottle, in order to purify said noble gas and said buffer gas.
29. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, the said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflect said laser beam, makes said laser beam intensify the district through said optics;
One polar biased unit, said laser and said be between the streaming base bottle, with the said laser beam of polar biased.
30. like the refilling type minisize noble gas polarization generator of request terms 29, wherein said reflector element comprises speculum or prism.
31. like the refilling type minisize noble gas polarization generator of request terms 15, the wherein said unit that intensifies comprises:
One laser is positioned at outside the said cavity, in order to produce a laser beam;
One reflector element is positioned at said cavity, in order to reflection and the said laser beam of polar biased, makes said laser beam intensify the district through said optics.
32., comprise that more a heat insulation layer is between said cavity and said heat-insulation unit like the refilling type minisize noble gas polarization generator of request terms 15.
33. refilling type minisize noble gas polarization generator as claimed in claim 15 is characterized in that, more comprises a malcoils, is positioned near the said filtering area, in order to emission and received RF signal, to detect the polarization of said noble gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810096610 CN101569847B (en) | 2008-04-29 | 2008-04-29 | Filling type minisize noble gas polarization generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810096610 CN101569847B (en) | 2008-04-29 | 2008-04-29 | Filling type minisize noble gas polarization generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101569847A CN101569847A (en) | 2009-11-04 |
| CN101569847B true CN101569847B (en) | 2012-12-05 |
Family
ID=41229410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810096610 Expired - Fee Related CN101569847B (en) | 2008-04-29 | 2008-04-29 | Filling type minisize noble gas polarization generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101569847B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967834B (en) * | 2012-11-23 | 2014-10-15 | 中国科学院武汉物理与数学研究所 | Device and method for magnetic resonance engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271456A (en) * | 1997-09-26 | 2000-10-25 | 赫利斯平波拉里西尔特加斯有限责任公司 | Magnetically shielded container |
| US6648130B1 (en) * | 1999-08-11 | 2003-11-18 | Medi-Physics, Inc. | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets |
| CN1543671A (en) * | 2002-03-08 | 2004-11-03 | ���������ƴ���ʽ���� | Plasma device |
-
2008
- 2008-04-29 CN CN 200810096610 patent/CN101569847B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271456A (en) * | 1997-09-26 | 2000-10-25 | 赫利斯平波拉里西尔特加斯有限责任公司 | Magnetically shielded container |
| US6648130B1 (en) * | 1999-08-11 | 2003-11-18 | Medi-Physics, Inc. | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets |
| US7066319B2 (en) * | 1999-08-11 | 2006-06-27 | Medi - Physics, Inc. | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets |
| CN1543671A (en) * | 2002-03-08 | 2004-11-03 | ���������ƴ���ʽ���� | Plasma device |
Non-Patent Citations (2)
| Title |
|---|
| 图1，11. |
| 图1. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101569847A (en) | 2009-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chung et al. | Design features and commissioning of the versatile experiment spherical torus (VEST) at Seoul National University | |
| ES2566607T3 (en) | Method and apparatus for loading liquid metal in an evaporator device | |
| KR101367142B1 (en) | Superconductive electromagnet apparatus | |
| US20200366180A1 (en) | Magnetohydrodynamic electric power generator | |
| JP4261048B2 (en) | Method for preparing hyperpolarized high-pressure helium gas and apparatus for preparing hyperpolarized high-pressure helium gas | |
| US7382124B2 (en) | Apparatus for producing hyperpolarized noble gas, and nuclear magnetic resonance spectrometer and magnetic resonance imager which use hyperpolarized noble gases | |
| JP2007534932A (en) | Method for hyperpolarizing nuclei and apparatus for carrying out this method | |
| US8248068B2 (en) | Hyperpolarization of lithium and other nuclei | |
| CN101569847B (en) | Filling type minisize noble gas polarization generator | |
| CN110049614A (en) | Microwave plasma device and plasma excitation method | |
| US4680936A (en) | Cryogenic magnet systems | |
| Xia et al. | Polarization and hyperfine transitions of metastable Xe 129 in discharge cells | |
| KR101624219B1 (en) | A multiple single spoke resonators cryomodule of heavy ion accelerator | |
| JP4169122B2 (en) | Nuclear spin-polarized rare gas production apparatus and polarized rare gas production method using the same | |
| EP1588178B1 (en) | Method of producing optically pumped hyperpolarized gas | |
| US3385072A (en) | Cryostat | |
| McAdams | Dynamic nuclear polarization of liquid helium-three by optical pumping | |
| CN104797071A (en) | Built-in type magnetic-confinement antenna radio-frequency ion source | |
| CN101569848B (en) | Real-time noble gas polarization generator and transit box of polarized noble gas | |
| TW200941514A (en) | Refillable micro noble gas polarization generator | |
| JPS6163007A (en) | Superconductive device | |
| Dmitriev et al. | Spin polarization of 85 Rb atoms in collisions with optically oriented metastable 4 He atoms in alkali–helium plasma | |
| CN101571578A (en) | Minisize uniform magnetic field generator | |
| KR101638593B1 (en) | QWR cryomodule of heavy ion accelerator | |
| KR101669924B1 (en) | A multiple half wave resonators cryomodule of heavy ion accelerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140429 |