CN205752095U - two-dimensional angular distribution proton spectrometer - Google Patents
two-dimensional angular distribution proton spectrometer Download PDFInfo
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- CN205752095U CN205752095U CN201620449896.6U CN201620449896U CN205752095U CN 205752095 U CN205752095 U CN 205752095U CN 201620449896 U CN201620449896 U CN 201620449896U CN 205752095 U CN205752095 U CN 205752095U
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Abstract
This utility model provides a kind of two-dimensional angular distribution proton spectrometer, and including the proton screening plant set gradually, electromagnetic field device and proton detection device, proton screening plant includes the entrance aperture array of two-dimensional lattice structure.This utility model is based on traditional Thomson proton spectrometer, by the single entrance aperture of Thomson proton spectrometer is modified to entrance aperture array, proton beam power spectrum in different directions can be recorded simultaneously, and then the two-dimensional space distributed intelligence of acquisition proton, thus it is greatly improved the ability obtaining proton beam information.
Description
Technical field
This utility model relates to proton spectrometer, in particular it relates to two-dimensional angular distribution proton spectrometer.
Background technology
1897, cathode ray through orthogonal electric field and magnetic field, was found that the essence of cathode ray is band by Thomson
The particle of negative electricity, and referred to as electronics.This epochal discovery demonstrates atom and can divide, thus opens atom
The gate of physics.The diagnostic method equipped with electric field, magnetic field that he is used when experiment also remains with its name, life
Entitled Thomson spectrometer (Thomson Parabola Spectrometer), is the most conventional diagnosis measuring ion power spectrum
Instrument.
Traditional Thomson spectrometer is mainly made up of three devices: electromagnetic field device (magnetic direction and incident ion motion side
To being mutually perpendicular to), proton detection device (typically imaging plate IP or CR39) and proton screening plant (a diameter of
The single entrance aperture of 200um to 500um).High energy charged ion is after this single entrance aperture enters magnetic field, at electromagnetic field
Deflect under the effect of the produced electromagnetic field of device, finally accepted signal by ion detection device, it is possible to obtain ion is believed
Number power spectrum.For preferable Thomson spectrometer, charged ion track after electromagnetic field meets following relation:
Wherein, E is electric field intensity, and B represents magnetic induction, and m, q represent the quality of ion, electric charge respectively, and l is
Ion passes electric field and the length of field region, the vertical dimension that D is a center to be shielded to detection, x and y represent respectively from
Son side-play amount under electric field force and magnetic field force effect.Formula (1) shows, the track of ion is a parabola, has
The ion of different charge-mass ratios can obtain different parabolas.Just the energy of ion can be obtained by the intensity analyzing Ion track
Spectrum.Particularly, do not have the ion spectrometer of electric field to only magnetic field for, ion will be along magnetic direction deviation, its track
It it is straight line.
Owing to Thomson spectrometer has important application in terms of research Proton emission, spectrometer also develops constantly itself.
Although ion spectrometer can obtain power spectrum, but the ion that traditional Thomsons spectrometer is detected is the most all through single incidence
Hole.The ion angle of divergence corresponding to entrance aperture is about 10-7Sr～10-8Sr magnitude, it is impossible to obtain the information of angle ion distribution.
At present, many laboratorys all use RCF (Radiochromic film) as the diagnostic method of detection angle ion distribution: will
4～8 layers of RCF are stacked (depending on proton energy), are placed in after Shooting Point at 4～6cm (see " Laser-dr iven ion
Acce lerat ion:Source opt imizat ion and opt ica l contro l.Thesis, 2008 "), in order to survey
Amount ion under a certain particular energy Space Angle distribution and ion ceiling capacity.
RCF is the Common Diagnostic Methods at detection proton divergence angle, the experimentation that this is correlated with by numerous research worker.
The proton signal recorded by RCF, finds to there is negative correlativing relation between the angle of divergence and the energy of proton, i.e. proton
Energy its angle of divergence the highest the least (see " and sauerbrey&u.schramm et al.Nature Communications | DoI:
10.1038/ncomms1883 ", " Wahlstro ¨ m.Physical Review Letters.95,175002 (2005) " and
“Effect of self-generated magnetic fields on fast electron beam divergence in solid targets,
New J.Phys.12,063018(2010)”.Although test result is very directly perceived, but RCF also has an obvious limitation:
First it is being intended for single use property, after i.e. testing once, is accomplished by the RCF more renewed.In order to improve conventional efficient,
Generally RCF is fixed on sigma turntable, plays a tuorbillion and turn once, so take out a vacuum and can make a call to 4 to 8
Send out.Next to that energy bite is big, owing to RCF itself has certain thickness (about 100um), it is thus achieved that energy be high
Degree discretization.The proton that every layer of RCF can detect a certain energy layer is angular distribution, but low energy region (ground floor to second
Layer) energy bite is up to 2MeV.
Therefore, the function that the function that RCF measures angle ion distributed intelligence obtains ion power spectrum with Thomson spectrometer is tied mutually
Close, make the higher wide angular resolution ion spectrometer of practicality and also just create naturally, and had many research
Person has done relevant work, and achieves significantly progress.Between 2010 to 2011, H.Chen is at " Effect of
self-generated magnetic fields on fast electron beam divergence in solid targets",New J.Phys.
12,063018 (2010) " D.Jung et al. is neutralized at " Gauthier, S.Le Pape, J.R.Rygg, and R.Shepherd, Rev.
Sci.Instrum.81,10D314 (2010) " in succession propose to make incident aperture into the imagination of slit, and to through slit
Analysis that proton is correlated with and research.2013, Zheng is lost et al. at " Rev.Sci.Instrum.82,043301 (2011) "
Middle proposition enters perforation by aperture portion changes into slit and, not only obtains the ion power spectrum of middle body, also
Obtain the ion power spectrum of off-center part, and then obtain the information that one-dimensional ion space is angular distribution.
But, the arrangement of one-dimensional entrance aperture still has certain limitation for the angular distribution detection of proton signal.In order to more preferably
The Space Angle distribution character of ground reflection proton, and do not lose the characteristic of Thomson spectrometer parsing power spectrum, the application is original
On the basis of devise two-dimensional angular distribution proton spectrometer.Compared with the proton spectrometer of one-dimensional wide angle, two-dimensional angular distribution proton spectrometer energy
Enough detect the whole plane proton power spectrum in different spatial, thus provide the letter of proton space distribution the most intuitively
Breath.Comparing other cation, protonatomic mass is minimum, is easiest to be accelerated, and quantity is much larger than other ion, therefore originally
It is proton signal that utility model improves the signal of the spectrometer detection obtained.
Utility model content
For defect of the prior art, the purpose of this utility model is to provide a kind of two-dimensional angular distribution proton spectrometer.
A kind of two-dimensional angular distribution proton spectrometer provided according to this utility model, including housing, is disposed with in housing
Proton screening plant, electromagnetic field device and proton detection device, proton screening plant includes two-dimensional lattice structure
Entrance aperture array；Entrance aperture array is arranged in the through hole on housing.
Preferably, electromagnetic field device includes parallel Magnet, and parallel Magnet is made up of the Magnet that two pieces of synonyms poles are relative,
The magnetic direction of parallel Magnet is mutually perpendicular to the normal orientation of entrance aperture array.
Preferably, the angle, θ that entrance pinhole array rotates around the center of circle is 15 °, and wherein, described angle, θ is level side
Angle between the line direction or column direction of entrance aperture array.
Preferably, the gap between parallel Magnet is 40mm, and the extended distance of parallel Magnet is 50mm.
Preferably, a diameter of 0.25mm of entrance aperture in entrance aperture array, in entrance aperture array between two adjacent entrance aperture
Away from for 2mm, altogether comprise 11 row * 11 and arrange an entrance aperture.
Preferably, also include that metallic target, described entrance aperture array are 60mm with the distance of Shooting Point on metallic target.
Preferably, between proton screening plant with proton detection device, parallel Magnet it is provided only with.
Preferably, proton detection device includes detection screen.
Preferably, detection screen is imaging plate.
Preferably, being provided with slide rail in housing, slide rail extends along the normal orientation of entrance aperture array, and housing bottom exists
Slide rail is provided with draw-in groove in the region between one end of parallel Magnet with parallel Magnet, and draw-in groove runs through housing bottom,
And the mating shapes of the shape of draw-in groove and imaging plate.
Preferably, at imaging plate, the side of parallel Magnet is provided with aluminium sheet.
Compared with prior art, this utility model has a following beneficial effect:
This utility model is by being modified to have spatial point by the single entrance aperture in the proton screening plant of tradition spectrometer
The entrance aperture array of battle array structure, by detecting the power spectrum of two-dimensional lattice structure, it is thus possible to recording proton spectrum
Provide proton space distributed intelligence intuitively simultaneously, thus be greatly improved the ability obtaining proton beam information.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, of the present utility model other
Feature, purpose and advantage will become more apparent upon:
Fig. 1 is the overlooking surface structure chart of two-dimensional angular distribution proton spectrometer.
Fig. 2 is that coordinate axes defines direction.
Fig. 3 is entrance aperture array schematic diagram.
Fig. 4 is the result of GPT simulation.
Fig. 5 is the tree figure of proton spectrum, and each layer represents the spatial distribution of proton under a certain energy.
Fig. 6 is the result obtained by Fig. 5, represents the ceiling capacity distribution of proton.
Fig. 7 is the result obtained by Fig. 5, represents the number density distribution of proton.
Fig. 8 is external structure schematic diagram of the present utility model.
Fig. 9 is internal structure schematic diagram of the present utility model.
In figure:
1-metallic target
2-proton beam
3-entrance aperture array
The parallel Magnet of 4-
5-imaging plate IP
6-housing
7-slide rail
8-draw-in groove
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in detail.Following example will assist in the skill of this area
Art personnel are further appreciated by this utility model, but limit this utility model the most in any form.It should be pointed out that, to this
For the those of ordinary skill in field, without departing from the concept of the premise utility, it is also possible to make some changes and
Improve.These broadly fall into protection domain of the present utility model.
The same with one-dimensional wide angle proton spectrometer with Thomson spectrometer, two-dimensional angular distribution proton spectrometer include proton screening plant,
Electromagnetic field device and proton detection device.Difference is, the proton screening plant of two-dimensional angular distribution proton spectrometer does not uses
Single entrance aperture, but use the entrance aperture array of two-dimensional lattice structure.In view of two-dimensional angular distribution proton spectrometer is for make for the first time
With, using simplest parallel Magnet pattern during design, there is no added electric field, the highest Z ion signal and proton signal will
Coincide together.
As it is shown in figure 1, a kind of two-dimensional angular distribution proton spectrometer provided according to this utility model, including housing, in housing
Being disposed with proton screening plant, electromagnetic field device and proton detection device, proton detection device includes two-dimensional lattice
The entrance aperture array of structure；Entrance aperture array is arranged in the through hole on housing.Electromagnetic field device includes parallel Magnet, flat
Row Magnet is made up of the Magnet that two pieces of synonyms poles are relative, the normal orientation of the magnetic direction of parallel Magnet and entrance aperture array
It is mutually perpendicular to.The angle, θ that entrance aperture array pivots is 15 °.Gap between parallel Magnet is 40mm, parallel
The extended distance of Magnet is 50mm, and the spacing between adjacent entrance aperture is 2mm.Beat on described entrance aperture array and metallic target
The distance of target spot is 60mm.Parallel Magnet it is provided only with between proton screening plant with proton detection device.Proton detection
Device includes detection screen.Detection screen is imaging plate.Being provided with slide rail in housing, slide rail is along the normal orientation of entrance aperture array
Extending, housing bottom is provided with draw-in groove, draw-in groove at slide rail in the region between one end of parallel Magnet with parallel Magnet
Run through housing bottom, and the mating shapes of the shape of draw-in groove and imaging plate.Incident proton enters from described entrance aperture array
Behind described magnetic field, deflect under the influence of a magnetic field, by proton detection device detection proton and record proton power spectrum and
Two-dimensional space distributed intelligence.Electric field is not applied between proton screening plant and proton detection device.
Wherein, owing to the imaging plate (IP, Image Plate) in proton detection device is very sensitive to proton signal,
The application selects imaging plate IP as the diagnostic mode of detection proton.But, imaging plate IP can only single measurement proton letter
Number, in order to improve conventional efficient, the application devises imaging plate IP actuating device.12 imaging plate IP are fixed on one
Can be with on the metal framework of slide anteroposterior, the draw-in groove of a wide about 5mm has been opened in framework front, and imaging plate IP can be from card
Drop inside groove.After collecting signal, imaging plate IP falls from the draw-in groove in front under the promotion of electronic control translation stage,
Enter IP and collect chamber.The front collecting chamber is the aluminium sheet of 1cm equipped with a piece of thickness, for the high energy electricity in screening experiment
Son or the gamma ray signal disturbing to IP.After before once, a piece of IP drops, rear a piece of IP is the most just in the institute of IP before
The position at place, can directly lay one time, until all of 12 IP drop in draw-in groove.So, take out
One time vacuum just can be made a call to 12 times, considerably increases the efficiency of experiment.
The main part of two-dimensional angular distribution proton spectrometer is by the neodymium iron boron of two pieces of 50mm × 100mm × 10mm in field region
Magnet forms, and magnetic direction is perpendicular to Proton-Induced Reactions direction.In order to increase the receiving angle of proton, ensure magnetic again simultaneously
The intensity of field, magnet gap is set as 40mm by the application, and the magnetic induction of center, field is 0.26 tesla.Proton
Entrance aperture distance Shooting Point 60mm in screening plant, proton enters field region, by Lorentz after entrance aperture
Power and upward deflect, be finally imaged plate IP receive.As shown in Figure 1 and Figure 2, the transverse area in magnetic field is 50mm, imaging
Plate IP distance magnet edges 225mm.
In Fig. 1, B represents central magnetic field intensity, L1Represent the Shooting Point distance to entrance aperture array, L2Represent field region
Width (extended distance of parallel Magnet), D represents the distance to detection screen of the magnet edges in parallel Magnet, and Gap represents
Spacing between parallel Magnet；B=0.26T；L1=60mm；L2=50mm；D=225mm；Gap=40mm.In Fig. 2, fixed
Justice x direction is that Magnet N level points to S level direction, and y direction is straight down, and z direction is that perpendicular proton enters magnetic field
Direction.
General, the experimental result that Thomson spectrometer obtains is a zero point and a spectral line.Two-dimensional angular distribution proton spectrometer
Result would is that zero point and the spectral line of two-dimensional lattice structure, the spectral line that different entrance aperture obtain can be different, reflection
It it is proton spectrum characteristic at this locus.If vertically placed by entrance aperture array, the spectral line of different entrance aperture is by phase
The most overlapping.In order to show the power spectrum that each entrance aperture is launched, need to pivot entrance aperture array one suitable angle
Degree, as shown in Figure 3.Anglec of rotation θ is 15 ° in this experiment.In the 11*11 entrance aperture array shown in Fig. 3,
A diameter of 250um of entrance aperture, is made by the method for chemical etching.Spacing between entrance aperture is 2mm.Entrance aperture
The disk material of array is 304 rustless steels, and thickness is 200um.
But, owing to the spacing of Magnet is relatively big, must take into edge effect to improve accuracy in computation.When proton is oblique
When penetrating magnetic field, mainly by the magnetic field force in x direction, simultaneously also can be by the magnetic field force in y and z direction.Therefore, we
Need each three-dimensional magnetic-field component in magnetic field space is measured respectively.Owing to needing to obtain each point of space
Three-dimensional magnetic field component, each some Tesla meter is measured needs special magnetic field measuring instrument, and needs cost longer
Time, laboratory does not has such condition at present.Therefore we select and measure and simulate the method combined, the most first
Measure the magnetic field intensity on three coordinate axess of x, y, z of magnetic field, then substitute into Radia according to the value measured actual on axle soft
Part, with the similar parallel magnetic field of Radia software simulation, finally provides three, the magnetic field component of each point in space.Actual measurement number
According to the error with the analogue value less than 1%.
After perpendicular proton enters magnetic field, in the case of being not added with electric field, the track of proton is straight line.But it is wide to two dimension
For the proton spectrometer of angle, substantial amounts of proton is oblique incidence magnetic field after passing entrance aperture, and Magnetic field inhomogeneity, proton exists
Track on IP the most still straight line is the most unknown, needs could really be demarcated by simulation.To this, we use GPT
Particle through entrance aperture, through magnetic field is simulated by (General particle Tracers) simulation program.
GPT is a proton tracing simulation program based on Runge Kutta algorithm, it is possible to effectively consider particle oblique incidence Three-Dimensional Magnetic
The amount of deflection produced after Chang.Under our experimental conditions, concrete analog parameter is:
1, proton beam: 1E7 proton, energy is distributed in Maxwell between 1 to 5 MeV, 20 ° send out
It is uniformly distributed in dissipating angle.
2, neutral particle number: 1E6 high-energy photon.Light laser can produce substantial amounts of X when interacting with metallic target
Ray, owing to not acted on by Lorentz force, X-ray through magnetic field time along straightline propagation.Detection screen produces zero
Point signal.The purpose arranging photon is the most just used to determine the position of zero point.
3, magnetic field: the three-dimensional magnetic field result be given according to magnetic simulation software Radia carries out computing.
It is pointed out that proton that TNSA accelerates and non-homogeneous dissipates in the angle of divergence, the angle of divergence of high energy proton is compared
The angle of divergence of low energy proton is much smaller.Due to the angle of divergence and energy corresponding relation with laser contrast, the size of target,
The parameters such as thickness all have relation and complex, GPT simulation also cannot accomplish accurately to consider this effect.Therefore, this time
Analog result supposes that proton is uniformly distributed in the angle of divergence of 20 ° for the time being, i.e. guarantees that all of entrance aperture has 1～5MeV
Proton pass, as shown in Figure 4.By GPT analog result, we determined that following 2 points:
First: entrance aperture array pivots after 15 °, and each entrance aperture can produce an initial point and a spectral line,
Different spectral lines can stagger completely, and spectral line and adjacent zero point also will not be overlapped.This indicates that, by entrance aperture battle array
Row rotate 15 °, and it is feasible for resolving every spectral line respectively.
Second: when behind the proton oblique incidence magnetic field of different-energy, simultaneously take account of the edge effect in magnetic field, proton is in detection
The most linearly, analytical data is with Thomson spectrometer equally for track on screen.
Simulated by GPT, it has been found that although the energy range of proton is the same, but spectral line length corresponding to different entrance aperture
Not consistent.This result is rational, because each aperture is corresponding to a specific proton transport direction, edge
The proton corresponding to entrance aperture at place is oblique incidence magnetic field, the proton movement region of oblique incidence closer to Magnet, magnetic in region
Field is higher, and amount of deflection ought to be bigger.
In one specifically experiment, two-dimensional angular distribution proton spectrometer is put in after Shooting Point at 6cm.11*11 entrance aperture
The search coverage of array correspondence 2cm*2cm, it is thus achieved that proton collection angle be 20 °.Use 20cm*12cm's during experiment
SR type IP plate detection proton signal.The thick aluminium foil of one layer of 15um it is surrounded by, it is possible to intercept the energy matter less than 1MeV outside IP
The noise signals such as son and scattered light.
By in the IP readout instrument detection data that draws of scanning, the detectable signal of each entrance aperture is by a zero point and one
Spectral line forms.Zero signal corresponds to X-ray, and X-ray is not charged, with straight line in field region after entrance aperture
Propagating, therefore zero point is equivalent to entrance aperture equal proportion amplification on IP plate；Strip spectral line is by with certain spectral distribution
Proton forms, and the energy that the proton of spectral line the top is corresponding is 1MeV, and the energy proton less than 1MeV is by by IP outer layer
15um aluminium foil is shielded.
Energy spectrum analysis is carried out, it is possible to obtain reflect the tree-shaped knot of proton signal by the dot matrix of angular resolution spectrometer wide to two dimension
Composition, as shown in Figure 5.The multilamellar of corresponding different proton energys is contained in the tree figure of the wide angular resolution spectrometer of two dimension
Sectional drawing, proton energy range is 1MeV to 3MeV, and energy bite is 0.2MeV.The sectional drawing of each layer represent be in specific
Proton number space distribution situation under energy.Being positioned at the proton quantity at 1MeV most, the angle of divergence of proton is the most maximum.
And along with the rising of energy, on each section of layer, the quantity of proton gradually weakens, the angle of divergence is also gradually reduced, and whole shape is such as
Same Christmas tree.The ceiling capacity of proton is 2.7MeV, say, that the most old proton of this section of layer of 2.6MeV, but
Negligible amounts).The corresponding relation of the proton energy drawn by tree figure and the angle of divergence is with the experimental result of K.Zeil
(see " sauerbrey&u.schramm et al.Nature Communications | DoI:
10.1038/ncomms1883 ") similar.
The visual result of RCF understands, and the most sensitive to proton signal.Dendrogram is similar with RCF lamination, can
To reflect the angular distribution information of proton.Compared with RCF, dendrogram Pros and Cons is the most clearly.
Advantage is: the energy bite of dendrogram can be arranged by procedural freedom.Such as 0.2MeV is the least no matter
The how high proton space scattergram can being clearly presented under a certain energy of proton energy.And RCF has certain thickness,
Depending on its energy bite is by the thickness of RCF, and interval is the biggest.Such as, conventional MD-V2 type RCF ground floor cut-off
Amount has 1.2MeV, and the cut-off energy of the second layer reaches 3.2MeV.For this experimental result, the highest energy of proton is
2.7MeV, if this time detects with RCF, by only one layer signal in stack layers.And by two dimension wide cutin
Spectrometer then can obtain stacking effect clearly.Inferior position is, RCF can obtain higher image resolution ratio by scanning,
And the power spectrum dendrogram that the wide angular resolution Pu Yi of two dimension obtains is the information that entrance aperture dot matrix based on two-dimensional discrete obtains, then
The signal utilizing two-dimensional discrete makees transition processing, though degree directly perceived is good but precision is not as good as RCF.Need to improve detection accuracy
That entrance aperture to be done is closeer.
If the outermost layer envelope of dendrogram is intercepted out by we, just can get the ceiling capacity scattergram of proton, such as figure
Shown in 6.Proton ceiling capacity is 2.7MeV, and the highest energy of surrounding proton then drops to about 2.2MeV, this
The rule that variation tendency is the least with the highest angle of divergence of proton energy under TNSA acceleration mechanism is consistent.Ideally, maximum
The proton of energy should be positioned at normal direction center after target, and record proton and be positioned at center side on the upper side.Off-center
Reason be that the flatness on target surface is inadequate, when laser and metallic target interact, normal direction not level after target,
But slightly caused by the most inclined low-angle.Equally, if the proton spectrum recording each entrance aperture is integrated,
Just can get the density profile of proton beam.Number density of protons presents the trend that middle high four limits are low, shows more proton
Within concentrating on the less angle of divergence.
Therefore, two-dimensional angular distribution proton spectrometer and RCF can detect the angular distribution information of proton, each have their own advantage, experiment
Time can complement each other.Especially, when proton energy is relatively low, (such as proton energy is less than 3MeV, on RCF lamination
Only one layer signal), tree figure more can provide the result of proton energy intuitively.
Above specific embodiment of the utility model is described.It is to be appreciated that this utility model is not
Being confined to above-mentioned particular implementation, those skilled in the art can make a variety of changes within the scope of the claims
Or amendment, this has no effect on flesh and blood of the present utility model.In the case of not conflicting, embodiments herein
Can arbitrarily be mutually combined with the feature in embodiment.
Claims (10)
1. a two-dimensional angular distribution proton spectrometer, it is characterised in that include housing, be disposed with proton sieve in housing
Screening device, electromagnetic field device and proton detection device, proton screening plant includes the entrance aperture array of two-dimensional lattice structure；
Entrance aperture array is arranged in the through hole on housing.
Two-dimensional angular the most according to claim 1 distribution proton spectrometer, it is characterised in that electromagnetic field device includes putting down
Row Magnet, parallel Magnet is made up of the Magnet that two pieces of synonyms poles are relative, the magnetic direction of parallel Magnet and entrance aperture array
Normal orientation be mutually perpendicular to.
Two-dimensional angular the most according to claim 2 distribution proton spectrometer, it is characterised in that entrance aperture array is around the center of circle
The angle, θ rotated is 15 °, and wherein, described angle, θ is horizontally oriented the line direction with entrance aperture array or column direction
Between angle.
Two-dimensional angular the most according to claim 2 distribution proton spectrometer, it is characterised in that between parallel Magnet
Gap is 40mm, and the extended distance of parallel Magnet is 50mm.
Two-dimensional angular the most according to claim 1 distribution proton spectrometer, it is characterised in that incident in entrance aperture array
Bore dia is 0.25mm, and in entrance aperture array, two adjacent entrance aperture spacing are 2mm, altogether comprises 11 row * 11 and arranges
Individual entrance aperture.
Two-dimensional angular the most according to claim 1 distribution proton spectrometer, it is characterised in that also include metallic target, institute
Stating entrance aperture array with the distance of Shooting Point on metallic target is 60mm；Proton detection device includes detection screen.
Two-dimensional angular the most according to claim 1 distribution proton spectrometer, it is characterised in that proton screening plant with
Parallel Magnet it is provided only with between proton detection device.
Two-dimensional angular the most according to claim 7 distribution proton spectrometer, it is characterised in that detection screen is imaging plate IP.
Two-dimensional angular the most according to claim 8 distribution proton spectrometer, it is characterised in that be provided with slide rail in housing,
Slide rail along entrance aperture array normal orientation extend, housing bottom slide rail near one end of parallel Magnet and parallel Magnet it
Between region in be provided with draw-in groove, draw-in groove runs through housing bottom, and the mating shapes of the shape of draw-in groove and imaging plate.
Two-dimensional angular the most according to claim 8 distribution proton spectrometer, it is characterised in that at imaging plate towards parallel
The side of Magnet is provided with aluminium sheet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826158A (en) * | 2016-05-17 | 2016-08-03 | 上海交通大学 | Two-dimensional angular distribution proton spectrometer |
| CN113109857A (en) * | 2021-03-24 | 2021-07-13 | 北京大学 | Medium-energy electronic detection probe and medium-energy electronic detector |
-
2016
- 2016-05-17 CN CN201620449896.6U patent/CN205752095U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826158A (en) * | 2016-05-17 | 2016-08-03 | 上海交通大学 | Two-dimensional angular distribution proton spectrometer |
| CN113109857A (en) * | 2021-03-24 | 2021-07-13 | 北京大学 | Medium-energy electronic detection probe and medium-energy electronic detector |
| CN113109857B (en) * | 2021-03-24 | 2024-04-19 | 北京大学 | Medium-energy electronic detection probe and medium-energy electronic detector |
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