WO2002019384A1 - Lampe a cathode creuse, analyseur d'absorption atomique et analyseur de fluorescence atomique - Google Patents
Lampe a cathode creuse, analyseur d'absorption atomique et analyseur de fluorescence atomique Download PDFInfo
- Publication number
- WO2002019384A1 WO2002019384A1 PCT/JP2001/007545 JP0107545W WO0219384A1 WO 2002019384 A1 WO2002019384 A1 WO 2002019384A1 JP 0107545 W JP0107545 W JP 0107545W WO 0219384 A1 WO0219384 A1 WO 0219384A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stem
- holder
- hollow cathode
- cylindrical member
- lamp
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
- G01N21/6404—Atomic fluorescence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/09—Hollow cathodes
Definitions
- the present invention relates to a light source of an analyzer for performing an atomic absorption analysis or an atomic fluorescence analysis or the like, and a holo-power sword lamp used as a high-intensity bright line light source. Further, the present invention relates to an atomic absorption spectrometer and an atomic fluorescence analyzer using the above-mentioned holographic lamp. Background art
- the above-mentioned conventional holo-sword lamp has the following problems. That is, the hollow cathode used in the lamp of the above-mentioned U.S. Pat. No. 4,885,504 is fixed to the stem pin via a mounting bracket fixed by spot welding or the like. Therefore, when the hollow cathode is fixed in the lamp, welding is frequently used. As a result, the workability of assembling the lamp is deteriorated, and at the same time, it is difficult to align the hollow cathode and the anode in the tube axis direction.
- the present invention has been made to solve the above-described problems, and in particular, has an assembling workability. It is an object of the present invention to provide a hollow sword lamp in which the hollow cathode and the anode are easily aligned in the tube axis direction. Another object of the present invention is to provide an atomic absorption spectrometer and an atomic fluorescence spectrometer using such a hollow force lamp. Disclosure of the invention
- a light emission window is arranged on one end side of a bulb, a stem is arranged on the other end side of the bulb, and a hollow cathode and an anode are arranged in the bulb from the light emission window side toward the tube axis.
- a tubular member extending in the tube axis direction is erected substantially at the center of the stem, the tubular member surrounds the anode, and the holder containing the hollow cathode is replaced with a tubular member. Characterized in that it is supported by the end face on the side of the light exit window.
- a cylindrical member is erected on the stem in the bulb to improve productivity and to achieve a structure in which discharge from other than the hollow cathode does not easily flow around the anode.
- the surrounding of the portion where discharge sneakage to the anode is likely to occur can be achieved with a simple configuration in which the tubular member is erected on the bulb.
- alignment between the hollow cathode and the cylindrical member with respect to the tube axis can be easily achieved.
- Such a holder makes it possible to arrange the hollow cathode concentrically with respect to the tubular member, improves the assembling work of the lamp, and assists mass production of the lamp. is there.
- An atomic absorption spectrometer is an atomic absorption spectrometer for measuring a specific component contained in a sample.
- a light source that irradiates the atomized sample with a light beam containing a resonance line, a measuring unit that measures the absorbance of the incident light by allowing the light beam that has passed through the atomized sample to be incident
- the light source extends in the tube axis direction It is a holocaust lamp in which a cylindrical member is erected substantially at the center of the stem, the cylindrical member surrounds the anode, and the holder accommodating the hollow cathode is supported by the end surface of the cylindrical member on the light emission window side.
- This atomic absorption spectrometer is a device for measuring the degree of absorption of incident light of a light beam that has passed through an atomized sample by a measuring unit.
- the hollow sword lamp has a cylindrical member installed on the stem inside the bulb in order to improve productivity and achieve a structure in which discharge from other than the hollow cathode does not easily flow around the anode. I let it.
- the surrounding of the portion where discharge spillage to the anode is likely to occur can be achieved with a simple configuration such that the tubular member is erected on the bulb.
- alignment between the hollow cathode and the cylindrical member with respect to the tube axis can be easily achieved.
- Such a holder makes it possible to arrange the hollow cathode concentrically with respect to the cylindrical member, improves the assembly workability of the lamp, and helps mass production of the lamp. is there.
- An atomic fluorescence spectrometer is an atomic fluorescence spectrometer for measuring a specific component contained in a sample, wherein the atomizing means for atomizing the sample and the light beam are atomized.
- a light source for irradiating the sample and a measuring unit for measuring the intensity of the fluorescence emitted by the atoms excited by the light beam are provided.
- the light source has a tubular member extending in the tube axis direction at approximately the center of the stem.
- the hollow sword lamp is characterized in that it is erected, and the cylindrical member surrounds the anode, and the holder accommodating the hollow cathode is supported by the end face of the cylindrical member on the light emission window side.
- This atomic fluorescence analyzer is a device for measuring the intensity of the fluorescence emitted by the atoms excited by the light beam by a measuring unit.
- a cylindrical member is erected on the stem in the bulb to improve productivity and to achieve a structure in which discharge from other than the hollow cathode does not easily flow around the anode.
- a simple configuration such as a tubular member provided on the bulb.
- a holder by supporting the holder at the end surface of the cylindrical member on the light emission window side, alignment between the hollow cathode and the cylindrical member with respect to the tube axis can be easily achieved.
- Such a holder makes it possible to arrange the hollow cathode concentrically with respect to the tubular member, improves the workability of assembling the lamp, and helps the mass production of the lamp. .
- FIG. 1 is an exploded perspective view showing a hollow cathode lamp according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a state after the assembly of the holographic lamp shown in FIG. 1 is completed.
- FIG. 3 is a longitudinal sectional view of the holo-powered sword lamp shown in FIG.
- FIG. 4 is a cross-sectional view showing a second embodiment of a holo-sword lamp according to the present invention.
- FIG. 5 is a longitudinal sectional view of the holo-powered sword lamp shown in FIG.
- FIG. 6 is a sectional view showing a third embodiment of a holographic lamp according to the present invention.
- FIG. 7 is a diagram schematically showing an atomic absorption spectrometer and an atomic fluorescence analyzer according to the present invention.
- the holographic sword lamp 1 is a borosilicate It has a cylindrical bulb 2 made of glass. By closing the upper end of the bulb 2, a circular light exit window 3 is formed at the upper end of the bulb 2, and predetermined light is emitted to the outside by the light exit window 3.
- a disc-shaped glass stem 4 is fused to the valve 2 so as to close the open side at the lower end, and the bulb 2 and the stem 4 form a glass sealed container 5.
- Four stem pins 6 a to 6 d made of metal cover extending in the tube axis L direction are fixed to the stem 4 by melting the glass stem 4.
- an exhaust anode tube 7 extending in the direction of the tube axis L is fixed by melting the glass stem 4.
- the anode tube 7 is used as an anode in the sealed container 5 and extends so as to penetrate the center of the stem 4 in the tube axis L direction.
- the anode tube 7 is used as a tube for injecting a predetermined gas (for example, neon gas) from the outside after evacuating the air in the sealed container 5 at the time of assembling the holo-powered sword lamp 1, When the sword lamp 1 emits light, it is connected to an external power supply to function as an anode.
- a predetermined gas for example, neon gas
- a cylindrical member 8 made of ceramics extending in the direction of the tube axis L is accommodated in the sealed container 5, and the cylindrical member 8 is set up substantially at the center of the stem 4.
- the cylindrical member 8 concentrically surrounds the anode tube 7, and the stem pins 6 a to 6 d are arranged around the cylindrical member 8.
- the tubular member 8 is used as an electric partition between the stem pins 6 a to 6 d and the anode tube 7.
- a support projection 9 is formed in the center of the stem 4 so as to surround the anode tube 7, and the support projection 9 is formed in a cylindrical shape.
- the member 8 is inserted into the opening 8a on the stem 4 side.
- the cylindrical member 8 can be supported in the radial direction at the peripheral portion of the support projection 9. Therefore, when assembling the lamp 1, when the tubular member 8 is erected on the stem 4, it is possible to easily and surely assemble the tubular member 8 while positioning the tubular member 8 with respect to the stem 4.
- the inside of the sealed container 5 here, the light exit window 3 side of the two open ends of the cylindrical member 8)
- a cylindrical hollow cathode 10 is accommodated in the end (upper end).
- the hollow cathode 10 has a double structure of an outer cylindrical portion 10a made of stainless steel and an inner cylindrical portion 10b made of vanadium.
- the material of the inner cylinder portion 10b is changed according to the type of the element to be analyzed, and may be, for example, selenium or arsenic.
- the outer cylindrical portion 10a may not be used depending on the material of the inner cylindrical portion 1Ob.
- the hollow cathode 10 is accommodated in a suspended state at the upper end of the tubular member 8 via a cup-shaped holder 11 made of stainless steel or the like.
- the holder 11 has a main body 1 la extending in the tube axis L direction and inserted into the cylindrical member 8 from the opening 8 b on the light emission window 3 side, and a main body 1 la on the stem 4 side of the main body 1 la.
- a ring-shaped bottom 11 b supporting the hollow cathode 10 is formed by projecting inward at the end (lower end), and an outer end at the light exit window 3 side (upper end) of the main body 11 a.
- a flange portion 11c which is formed so as to protrude and is disposed in contact with the end face 8c of the cylindrical member 8.
- the hollow cathode 10 is supported from below by the ring-shaped bottom lib, so that the hollow cathode 10 can be inserted into the holder 11 from above. Further, by placing the flange portion 11c on the upper end surface 8c of the cylindrical member 8, the holder 11 is supported by the upper end surface 8c of the cylindrical member 8, and the inside of the cylindrical member 8 The hollow cathode 10 can be accommodated in a suspended state above the anode tube 7. Therefore, the hollow cathode 10 can be easily arranged concentrically with respect to the tubular member 8 by a simple operation of inserting the hollow cathode 10 into the holder 11 from above.
- the hollow cathode 10 is arranged concentrically with respect to the anode tube 7.
- the holder 11 is formed of a conductive metal
- power can be supplied to the hollow cathode 10 via the holder 11.
- the holder 11 is formed of a metal having good heat conductivity
- the light output of the lamp 1 can be improved by the heat radiation effect of the holder 11.
- a hood portion 12 made of stainless steel, nickel, or the like is placed on the holder 11 supported by the tubular member 8.
- the hood portion 12 has a cylindrical main body portion 12 a extending in the direction of the pipe axis L, and a flange portion 12 b formed by projecting outward at a lower end of the main body portion 12 a. . Therefore, the hollow cathode 10 and the hood 12 are reliably electrically connected via the holder 11 by bringing the flange 12 b of the hood 12 into contact with the flange 11 c of the holder 11. Connected to The hollow cathode 10 is pressed down from above by the flange portion 12 b of the hood portion 12, so that the hollow cathode 10 is properly prevented from sticking out.
- hood 12 prevents spatters generated from the hollow cathode 10 during discharge from scattering over a wide area, and prevents a large amount of spatters from adhering to the inner wall surface of the bulb 2.
- the density of the cathode element generated from the hollow cathode 10 can be increased in the hood 12.
- the hood portion 12 also contributes to the heat radiation of the hollow cathode 10, whereby the operating current of the lamp 1 can be increased.
- a circular opening 12c is formed on the peripheral surface of the main body portion 12a, and a coil-shaped thermionic emission cathode (electron) is formed in front of the opening 12c.
- (Source). 13 are arranged.
- L-shaped connecting pins 14 are fixed to both ends of the thermionic emission cathode 13 by welding.
- the connecting pins 14 are respectively welded to stem pins 6 a and 6 b extending from the stem 4 in the tube axis L direction. It is fixed and power can be supplied to thermionic emission cathode 13 from outside.
- the thermoelectron emission cathode 13 is formed by depositing barium oxide on the surface of a coil made of tungsten.
- thermoelectrons emitted from the thermionic emission cathode 13 are used to discharge through the opening 12 c of the hood section 12, and the thermoelectron emission cathode 13 and the anode are used as discharges.
- the unexcited state (ground state) cathode element existing at high density in the hood portion 12 is efficiently brought into the excited state.
- the so-called self-absorption part of the spectrum line is deprived of energy by unexcited atoms in the discharge space, (A phenomenon in which the intensity of the spectrum wire is further reduced) is less likely to occur in the lamp 1. Thereby, the light output of the lamp 1 is improved.
- the flange portion 12 b of the hood portion 12 is pressed from above by the power supply plate 16 made of stainless steel.
- a circular through hole 16 a for inserting the main body 12 a of the hood 12 is formed in the center of the power supply plate 16, and a stem pin is provided on a side of the through hole 16 a.
- a pin insertion hole 16b for inserting 6a, 6b is formed.
- the power supply plate 16 is provided with a pair of left and right welding pieces 16 c formed of tongue pieces. Each of the welding pieces 16c is formed by bending the disk-shaped power supply plate 16 at right angles along a radial line on both sides of the through hole 16a.
- the hood portion 12 is placed on the holder 11 supported by the cylindrical member 8, the main body portion 12a is inserted into the through hole 16a of the power supply plate 16, and the stem pin 6a is inserted into the pin insertion hole 16b.
- the holder pin 1 and the hood section 12 are welded, and the stem pins 6 c and 6 d are welded to the respective welding pieces 16 c.
- the flange portion 12 b of the hood portion 12 and the flange portion 11 c of the holder 11 are sandwiched and fixed between the upper end of the tubular member 8 and the power supply plate 16.
- the hood 12, the holder 11, and the hollow cathode 10 are electrically connected.
- a procedure for assembling the above-mentioned hollow power lamp 1 will be described.
- a stem 4 to which four stem pins 6 and an anode tube 7 are fixed is prepared.
- the tubular member 8 is placed on the stem 4 so that the anode tube 7 is inserted into the tubular member 8.
- the tubular member 8 is erected on the stem 4 so as to surround the anode tube 7.
- the main body 1 la of the holder 11 is inserted into the tubular member 8 from above, and the flange 11 c of the holder 11 is placed on the upper end of the tubular member 8.
- the hollow cathode 10 is dropped into the holder 11.
- the hood section 12 is placed on the holder 11 1.
- the flange portion 1 2b of the hood portion 12 and the flange portion 1 1c of the holder 11 are tightly clamped and fixed between the upper end of the tubular member 8 and the power supply plate 16 and the stem pin 6c, 6 d, the power supply plate 16, the hood portion 12, the holder 11, and the hollow cathode 10 are electrically connected.
- thermoelectron emission cathode (electron supply source) 13 placed in front of the opening 12 c of the hood section 12, connect the connecting pins 14 to the upper ends of the stem pins 6 a and 6 b. To each other. As a result, the thermionic emission cathode 13 and the stem pins 6a and 6b are electrically connected. Then, after assembling the components on the stem 4, this assembly is inserted from the open side of the valve 2, and the open end of the valve 2 is fused to the periphery of the stem 4.
- the air in the sealed container 5 is evacuated and a predetermined gas (for example, neon gas) is injected from the outside. Then, as shown in FIG. 2, while cutting the exposed part of the anode tube 7 to a predetermined length, To close the sealed container 5 while keeping the inside of the sealed container 5 at a predetermined gas pressure. Through a series of such operations, the assembly of the sword lamp 1 is completed.
- a predetermined gas for example, neon gas
- a predetermined voltage for example, 500 V
- a discharge is generated between the two.
- the neon gas atoms sealed in the sealed container 5 are ionized by this discharge.
- the cations generated by this ionization are attracted to the hollow cathode 10 side and collide with the inner wall surface of the inner cylindrical portion 1 Ob of the hollow cathode 10, and the cathode energy (vanadium) is generated by the collision energy at this time. Scatters in unexcited state (ground state).
- the flying cathode element for example, 500 V
- thermoelectrons emitted from the thermionic emission cathode 13 are used to make the opening 1 of the hood section 1 2 open.
- a discharge that passes through 2 c is generated between the thermionic emission cathode 13 and the anode tube 7, and the discharge causes an unexcited state (base state) existing at a high density in the hood 12.
- the cathode element efficiently transitions to the excited state, and the light output of lamp 1 is improved.
- another embodiment of the sword lamp will be described. However, the description is limited to those substantially different from the first embodiment, and is the same as or equivalent to the first embodiment.
- the components are denoted by the same reference numerals and description thereof will be omitted.
- the holo-sword lamp 30 shown in FIGS. 4 and 5 is provided with a thermionic emission cathode 13 but is not provided with a hood, and the power supply is welded and fixed to the stem pins 6c and 6d.
- a plate 31 is provided.
- the power supply plate 31 is disposed on the flange portion 11 c of the holder 11 and is brought into contact with the upper end surface of the outer cylindrical portion 10 a of the hollow cathode 10.
- the outer cylindrical portion 10a of the hollow cathode 10 and the flange portion 11c of the holder 11 are pressed from above by the power supply plate 31.
- the power supply to the hollow cathode 10 is reliably performed by the power supply plate 31 and the hollow cathode 10 is reliably prevented from flying out of the holder 11.
- an impact-resistant cylindrical anode cap 28 made of stainless steel, tungsten, molybdenum, or the like is fitted and fixed from above.
- the tip of the anode tube 7 can be protected from collision of electrons, heat, and the like, and damage to the anode tube 7 can be avoided.
- the holing force sword lamp 35 shown in FIG. 6 is configured such that a ceramic cylindrical holder 36 is placed on the upper end surface 8 c of a ceramic or metal cylindrical member 8 so as to overlap the cylindrical member 8 and the holder. 36 and 6 are arranged in a line in the direction of the tube axis L.
- the holder 36 extends in the direction of the tube axis L and is placed on an end surface (upper end surface) 8 c of the cylindrical member 8 on the light emission window 3 side; It has a ring-shaped bottom portion 36 b that is formed to protrude inward at the end of the stem 4 on the side of a and supports the hollow cathode 10.
- the hollow P-polarized electrode 10 and the tubular member 8 can be easily aligned. Then, between the power supply plate 37 fixed to the stem pin 6 e for the cathode and the cylindrical member 8 erected on the stem 4. By disposing the main body 36 a of the holder 36, the holder 36 is sandwiched between the power supply plate 37 and the tubular member 8. Therefore, the holder 36 is prevented from jumping out by the power supply plate 37, and it is not necessary to weld the holder 36 to the tubular member 8, so that the assembling workability of the lamp 1 is improved.
- the holder 36 By forming the holder 36 from an electrically insulating ceramic, it is possible to prevent the discharge from sneaking into the hollow cathode 10, and the heat radiation effect of the holder 36 facilitates the generation of metal vapor. Thus, the light output of the lamp 1 can be improved. Further, the power supply plate 37 is brought into contact with the upper end surface of the outer cylindrical portion 10a of the hollow cathode 10 and the power supply plate 37 presses the outer cylindrical portion 10a of the hollow cathode 10 and the holder 36 from above. So that it fits. This reliably prevents the hollow cathode 10 from jumping out of the holder 36. Then, the upper end portion of the stem pin 6 e penetrating the power supply plate 37 is bent, and the tip of the stem pin 6 e is welded to the upper surface of the power supply plate 37.
- the atomic absorption spectrometer 105 has an atomizing means 101 for atomizing the sample 10 °.
- a light beam containing the resonance line of the target element to be measured contained in the sample 100 is emitted from the light source 102, and this light is applied to the atomized sample 100. Is done. Then, the light beam that has passed through the atomized sample 100 is incident on the measuring unit 103, and the target element is quantified based on the absorbance at this time.
- the above-mentioned various holographic lamps can be applied to the light source 102, and the hollow cathode in the holographic source lamp is constituted by a specific component element contained in the sample 100. I have.
- Reference numeral 104 denotes a light condensing means composed of a reflection mirror for condensing a plurality of types of sword lamps.
- the atomization performed by the atomic absorption spectrometer 105 generally uses a flame method, a flameless method using an electric furnace, or the like.
- the atomic fluorescence spectrometer 106 has an atomizing means 101 for atomizing the sample 100. Further, a light beam from the light source 102 is applied to the atomized sample 100. And of the elements excited by the light beam The emitted fluorescence intensity is measured by the measuring unit 103 to quantify the target element. This light beam contains the resonance line of the target element.
- the above-mentioned various holographic cathode lamps can be applied to the light source 102, and the hollow cathode in the holographic cathode lamp is made of a specific component element contained in the sample 100. .
- reference numeral 104 denotes a light condensing means including a reflection mirror for condensing a plurality of types of hollow sword lamps.
- the atomization performed by the atomic fluorescence analyzer 106 is generally performed by a flame method or a flameless method using an electric furnace.
- the holographic lamp according to the present invention is not limited to the case where the holders 11 and 36 are directly supported by the end face of the cylindrical member 8, and the holders 11 and 3 are provided with an insulating member such as ceramics interposed therebetween. It goes without saying that the cylindrical member 8 may be indirectly supported by the end face of the cylindrical member 8.
- the holder described above has a main body extending in the tube axis direction and inserted into the cylindrical member from the light emission window side, and a hollow cathode formed by projecting inward at an end of the main body on the stem side. It is preferable to have a ring-shaped bottom portion to be supported and a flange portion formed so as to protrude outward at an end of the main body portion on the side of the light emission window and to be arranged in contact with the end surface of the tubular member.
- the holder is formed in a cup shape, and the hollow cathode and the cylindrical member can be easily aligned by a simple operation of dropping the hollow cathode into the holder.
- Such a cup-shaped holder is an extremely effective means for improving the workability of assembling the lamp.
- the flange portion of the holder is sandwiched between the power supply plate fixed to the stem pin for the cathode provided on the stem and the end of the tubular member erected on the stem.
- the fixing of the holder is achieved by pressing the flange portion against the end face of the tubular member with the power supply plate, so that the holder does not need to be welded to the tubular member, and the lamp assembling workability is good. become.
- the holder is formed of a metal having thermal conductivity and conductivity.
- the light output of the lamp can be increased by the heat radiation effect of the holder.
- the holder extends in the tube axis direction and is placed in contact with the end surface of the cylindrical member on the light emission window side, and the holder is formed so as to protrude inward at the stem side end of the main body. And a ring-shaped bottom portion for supporting the hollow cathode.
- the cylindrical member and the holder can be aligned in a line in the tube axis direction by stacking the holder on the cylindrical member. Therefore, the hollow cathode and the tubular member can be easily aligned by a simple operation of dropping the hollow cathode into the holder.
- Such a holder is an extremely effective means for improving the workability of assembling the lamp.
- the main body of the holder is disposed between the power supply plate fixed to the stem pin for the cathode provided on the stem and the end surface of the tubular member erected on the stem.
- the fixing of the holder is achieved by being sandwiched between the power supply plate and the tubular member, so that the holder does not need to be welded to the tubular member, and the workability of assembling the lamp is improved. Become good.
- the holder is formed of an electrically insulating ceramic. In the case where such a configuration is employed, it is possible to appropriately prevent the discharge from sneaking into the hollow cathode by the holder.
- an electron supply source is arranged between the light exit window and the hollow cathode, and the electron supply source is fixed to the stem pin.
- the discharge using thermionic emission between the electron supply source and the anode continuously supplies electrons to unexcited atoms, thereby promoting the generation of excited atoms and causing a self-absorption phenomenon that causes a decrease in lamp output. Can be suppressed.
- a cylindrical hood extending in the tube axis direction is arranged concentrically with respect to the cylindrical member, and one end on the opening side of the hood is electrically connected to the hollow cathode. It is preferable to dispose an electron supply source in front of the opening formed on the peripheral surface of the device.
- the sputtered objects scattered from the hollow cathode are retained in the hood, so that more excited atoms can be generated by the discharge using thermionic emission between the electron supply source and the anode. Therefore, the light output can be improved. Furthermore, since the excited atoms are not scattered in the valve and can be attached to the inner wall surface of the hood, the inner wall surface of the valve is less likely to be contaminated.
- the present invention relates to a light source of an analyzer for performing an atomic absorption analysis or an atomic fluorescence analysis, and a holo-sword lamp used as a high-intensity bright line light source. Can be easily aligned in the pipe axis direction. Further, the present invention relates to an atomic absorption spectrometer and an atomic fluorescence spectrometer using the above-mentioned holo-sword lamp.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001282582A AU2001282582A1 (en) | 2000-09-01 | 2001-08-31 | Hollow cathode lamp, atomic absorption analyzer, and atomic fluorescence analyzer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-265649 | 2000-09-01 | ||
JP2000265649A JP2002075283A (ja) | 2000-09-01 | 2000-09-01 | ホロカソードランプ、原子吸光分析装置及び原子蛍光分析装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002019384A1 true WO2002019384A1 (fr) | 2002-03-07 |
Family
ID=18752885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/007545 WO2002019384A1 (fr) | 2000-09-01 | 2001-08-31 | Lampe a cathode creuse, analyseur d'absorption atomique et analyseur de fluorescence atomique |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2002075283A (ja) |
AU (1) | AU2001282582A1 (ja) |
WO (1) | WO2002019384A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102507518A (zh) * | 2011-10-25 | 2012-06-20 | 天津港东科技发展股份有限公司 | 12灯位多通道原子荧光光度计 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007048275A1 (fr) * | 2005-10-28 | 2007-05-03 | Kazuhiro Miyashita | Lampe a decharge |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63122922A (ja) * | 1986-11-12 | 1988-05-26 | Japan Spectroscopic Co | ホロ−カソ−ドランプ及び該ランプを光源とした原子吸光/螢光分光光度計 |
EP0423736A2 (en) * | 1989-10-18 | 1991-04-24 | Hitachi, Ltd. | Multi-element simultaneous analysis atomic absorption spectroscopy photometer and multi-element simultaneous analytic method |
WO2000051163A1 (en) * | 1999-02-23 | 2000-08-31 | Hamamatsu Photonics K.K. | Hollow-cathode lamp |
WO2000051162A1 (fr) * | 1999-02-23 | 2000-08-31 | Hamamatsu Photonics K.K. | Lampe a cathode creuse |
-
2000
- 2000-09-01 JP JP2000265649A patent/JP2002075283A/ja active Pending
-
2001
- 2001-08-31 AU AU2001282582A patent/AU2001282582A1/en not_active Abandoned
- 2001-08-31 WO PCT/JP2001/007545 patent/WO2002019384A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63122922A (ja) * | 1986-11-12 | 1988-05-26 | Japan Spectroscopic Co | ホロ−カソ−ドランプ及び該ランプを光源とした原子吸光/螢光分光光度計 |
EP0423736A2 (en) * | 1989-10-18 | 1991-04-24 | Hitachi, Ltd. | Multi-element simultaneous analysis atomic absorption spectroscopy photometer and multi-element simultaneous analytic method |
WO2000051163A1 (en) * | 1999-02-23 | 2000-08-31 | Hamamatsu Photonics K.K. | Hollow-cathode lamp |
WO2000051162A1 (fr) * | 1999-02-23 | 2000-08-31 | Hamamatsu Photonics K.K. | Lampe a cathode creuse |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102507518A (zh) * | 2011-10-25 | 2012-06-20 | 天津港东科技发展股份有限公司 | 12灯位多通道原子荧光光度计 |
CN102507518B (zh) * | 2011-10-25 | 2013-05-08 | 天津港东科技发展股份有限公司 | 12灯位多通道原子荧光光度计 |
Also Published As
Publication number | Publication date |
---|---|
JP2002075283A (ja) | 2002-03-15 |
AU2001282582A1 (en) | 2002-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4240437B2 (ja) | ガス放電管 | |
US7569993B2 (en) | Gas discharge tube with discharge path limiting means | |
EP0727811A2 (en) | Gas discharge tube | |
EP0727812A2 (en) | Gas discharge tube | |
JP4907760B2 (ja) | ガス放電管 | |
US7764018B2 (en) | Gas discharge tube | |
US7619364B2 (en) | UV continuous spectrum lamp and its lighting device | |
WO2002019384A1 (fr) | Lampe a cathode creuse, analyseur d'absorption atomique et analyseur de fluorescence atomique | |
WO2002021570A1 (fr) | Lampe a cathode creuse, analyseur a absorption atomique et analyseur a fluorescence atomique | |
WO2002019385A1 (fr) | Lampe a cathode creuse, analyseur par absorption atomique et analyseur par fluorescence atomique | |
JP4237400B2 (ja) | ガス放電管 | |
WO2000051162A1 (fr) | Lampe a cathode creuse | |
WO2000034982A1 (fr) | Tube a decharge gazeuse | |
JP2003257366A (ja) | ホロカソードランプ、原子吸光分析装置及び原子蛍光分析装置 | |
JP2001256924A (ja) | 光源装置 | |
US20090310134A1 (en) | Multi Micro-Hollow Cathode Light Source and Multi-Atomic Simulataneous Absorption Spectrum Analyzer | |
US7271542B2 (en) | Gas discharge tube | |
JP2003254895A (ja) | ホロカソードランプ、原子吸光分析装置及び原子蛍光分析装置 | |
WO2000051163A1 (en) | Hollow-cathode lamp | |
WO2000051164A1 (fr) | Lampe a cathode creuse |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase |