GB496556A - Improvements in electrodes for electron discharge devices - Google Patents
Improvements in electrodes for electron discharge devicesInfo
- Publication number
- GB496556A GB496556A GB14997/37A GB1499737A GB496556A GB 496556 A GB496556 A GB 496556A GB 14997/37 A GB14997/37 A GB 14997/37A GB 1499737 A GB1499737 A GB 1499737A GB 496556 A GB496556 A GB 496556A
- Authority
- GB
- United Kingdom
- Prior art keywords
- employed
- metal
- cathode
- photo
- coil
- 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
- 239000002585 base Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052790 beryllium Inorganic materials 0.000 abstract 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 239000010955 niobium Substances 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 229910052701 rubidium Inorganic materials 0.000 abstract 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/32—Secondary-electron-emitting electrodes
Landscapes
- Lasers (AREA)
- Discharge Lamp (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
496,556. Photo-electric cells; electron multipliers ; cathode ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 31, 1937, No. 14997. Convention date, May 29, 1936. [Class 39 (i)] An emissive surface, suitable either as a photo-electric cathode or for an electron multiplier, is made by oxidizing a metal base, treating it with an alkali metal, again oxidizing, and again treating with the same metal. The metal of the base should be such that the heat of formation of its oxides, per oxygen bond, is approximately equal to that of the oxide of the alkali metal employed, for example bases of beryllium, zirconium, molybdenum, columbium and zinc may be employed with potassium, rubidium and caesium ; sodium may also be employed. In the apparatus shown a photoelectric cathode 3 of the type described is exposed to light from a source 8 and the electrons emitted concentrated by a coil 15 on to a surface 7 of the type described. The secondary electrons are concentrated by a coil 17 on to an output anode 5. The coils 15, 17 may be energized from a battery 19 through a potentiometer 21. Specifications 373,867, 379,893, and 393,967, are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82452A US2123024A (en) | 1936-05-29 | 1936-05-29 | Electrode for electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB496556A true GB496556A (en) | 1938-11-30 |
Family
ID=22171310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14997/37A Expired GB496556A (en) | 1936-05-29 | 1937-05-31 | Improvements in electrodes for electron discharge devices |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2123024A (en) |
| DE (1) | DE750419C (en) |
| GB (1) | GB496556A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE446289A (en) * | 1941-07-03 | |||
| US2443324A (en) * | 1942-11-07 | 1948-06-15 | Charles Schiffman | Electronic tube |
| US2428289A (en) * | 1942-11-07 | 1947-09-30 | Charles Schiffman | Electron tube coating |
| US2453810A (en) * | 1945-05-02 | 1948-11-16 | Smith Insdustries | Photoelectric tube |
| US2639963A (en) * | 1948-04-05 | 1953-05-26 | Sylvania Electric Prod | Secondary emitter and method of manufacture |
| NL77182C (en) * | 1948-12-04 | |||
| US2682479A (en) * | 1949-03-03 | 1954-06-29 | Rca Corp | Photosurface of a panchromatic type and method of preparing same |
| US4639638A (en) * | 1985-01-28 | 1987-01-27 | Sangamo Weston, Inc. | Photomultiplier dynode coating materials and process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT101557B (en) * | 1923-04-11 | 1925-11-10 | Philips Nv | Discharge tube. |
| NL38911C (en) * | 1929-08-28 | |||
| AT131785B (en) * | 1930-09-30 | 1933-02-10 | Philips Nv | Photoelectric cell. |
| GB421256A (en) * | 1933-03-14 | 1934-12-07 | Max Albin Ernst Pressler | Improvements in processes for producing photo-electric cells |
| FR787821A (en) * | 1934-03-26 | 1935-09-30 | Philips Nv | Method of manufacturing electron-emitting electrodes |
| AT143970B (en) * | 1934-03-26 | 1935-12-10 | Philips Nv | Method of making an electron emitting electrode. |
-
1936
- 1936-05-29 US US82452A patent/US2123024A/en not_active Expired - Lifetime
-
1937
- 1937-05-29 DE DER99485D patent/DE750419C/en not_active Expired
- 1937-05-31 GB GB14997/37A patent/GB496556A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2123024A (en) | 1938-07-05 |
| DE750419C (en) | 1944-12-21 |
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