GB1219705A - Light source lamp for atomic light absorption analysis - Google Patents
Light source lamp for atomic light absorption analysisInfo
- Publication number
- GB1219705A GB1219705A GB23391/69A GB2339169A GB1219705A GB 1219705 A GB1219705 A GB 1219705A GB 23391/69 A GB23391/69 A GB 23391/69A GB 2339169 A GB2339169 A GB 2339169A GB 1219705 A GB1219705 A GB 1219705A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melting point
- metal
- wires
- filled
- gaps
- 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
Links
- 230000031700 light absorption Effects 0.000 title abstract 2
- 230000008018 melting Effects 0.000 abstract 9
- 238000002844 melting Methods 0.000 abstract 9
- 229910052751 metal Inorganic materials 0.000 abstract 6
- 239000002184 metal Substances 0.000 abstract 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 3
- 239000000843 powder Substances 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 238000005470 impregnation Methods 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 229910052787 antimony Inorganic materials 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 238000009747 press moulding Methods 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 229910052711 selenium Inorganic materials 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052714 tellurium Inorganic materials 0.000 abstract 1
- 229910052716 thallium Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Abstract
1,219,705. Discharge lamps; cathode materials and processing. HITACHI Ltd. 7 May, 1969 [10 May, 1968], No. 23391/69. Heading H1D. A hollow cathode 1 in a lamp for atomic light absorption analysis is formed by a close mechanical linkage of fine wires of a predetermined dimension consisting of a metal having a relatively high melting point, gaps between said fine wires being filled with a predetermined quantity of a metal having a relatively low melting point. The high melting point wires may be ribbons of Ni or Cu, 200 Á or less in thickness and 0À5 mm. or less in width which may be arranged regularly to form the hollow cathode or may be arranged irregularly and compressed e.g. by press-moulding to form the cathode. Gaps between the wires are then filled with an alloy of alkali metal elements or with Se, Te, P or As by evaporation, or with Zn, Cd, In, Tl, Sn, Pb, Sb or Bi by impregnation, or with a metal powder. Wires of high melting point may be twisted together, some of the gaps filled with relatively low melting point powder, and the remaining gaps impregnated with a metal having a lower melting point than the powder. The relatively low melting point metal may also be in the form of wire e.g. of Fe. The wires of relatively high and relatively low melting points may be twisted together and compressed and the gaps filled with an impregnated metal having a lower melting point. Impregnation should be carried out in an inert or reducing atmosphere and the cathodes should be outgassed before use. The cathode 1 is surrounded by a nickel cylinder 9 and is spaced from a ring anode 3 by a mica disc 6 and a steatite ring 7. The glass envelope 10 is filled with an inert gas such as argon and is provided with a quartz window 13. In a modified lamp (Fig. 10, not shown) an additional insulating disc is provided between the disc 6 and the anode 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3088368 | 1968-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1219705A true GB1219705A (en) | 1971-01-20 |
Family
ID=12316119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23391/69A Expired GB1219705A (en) | 1968-05-10 | 1969-05-07 | Light source lamp for atomic light absorption analysis |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3623136A (en) |
| GB (1) | GB1219705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001344A1 (en) * | 1979-11-07 | 1981-05-14 | Lumalampan Ab | Cathode unit for fluorescent tube |
| FR2490831A1 (en) * | 1980-09-24 | 1982-03-26 | Japan Atomic Energy Res Inst | DEVICE FOR MEASURING A RADIATION DOSE |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503390A (en) * | 1973-05-11 | 1975-01-14 | ||
| JPS5724858B2 (en) * | 1974-11-27 | 1982-05-26 | ||
| US3955118A (en) * | 1975-02-19 | 1976-05-04 | Western Electric Company, Inc. | Cold-cathode ion source |
| GB1599595A (en) * | 1977-01-24 | 1981-10-07 | Hitachi Ltd | Spectral sources |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2228327A (en) * | 1929-05-04 | 1941-01-14 | Hans J Spanner | Discharge device |
| US2103623A (en) * | 1933-09-20 | 1937-12-28 | Ion Corp | Electron discharge device for electronically bombarding materials |
| US2121589A (en) * | 1934-06-28 | 1938-06-21 | Westinghouse Electric & Mfg Co | Emissive incandescent cathode |
| US2468037A (en) * | 1947-03-14 | 1949-04-26 | Dudley B Clark | Power rectifier tube and method of starting the same |
| US2604603A (en) * | 1947-11-10 | 1952-07-22 | Bendix Aviat Corp | Cold cathode tube |
| NL91132C (en) * | 1951-11-29 | |||
| US2888592A (en) * | 1954-07-22 | 1959-05-26 | Gen Electric | Cathode structure |
| US3286119A (en) * | 1963-05-08 | 1966-11-15 | Hitachi Ltd | Hollow cathode discharge tubes |
| US3361925A (en) * | 1966-11-03 | 1968-01-02 | Perkin Elmer Corp | Bismuth-lithium hollow cathode lamps |
-
1969
- 1969-05-07 US US822360A patent/US3623136A/en not_active Expired - Lifetime
- 1969-05-07 GB GB23391/69A patent/GB1219705A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001344A1 (en) * | 1979-11-07 | 1981-05-14 | Lumalampan Ab | Cathode unit for fluorescent tube |
| FR2490831A1 (en) * | 1980-09-24 | 1982-03-26 | Japan Atomic Energy Res Inst | DEVICE FOR MEASURING A RADIATION DOSE |
Also Published As
| Publication number | Publication date |
|---|---|
| US3623136A (en) | 1971-11-23 |
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