GB491287A - Improvements in secondary electron emitting electrodes suitable for electron discharge devices - Google Patents
Improvements in secondary electron emitting electrodes suitable for electron discharge devicesInfo
- Publication number
- GB491287A GB491287A GB578/38A GB57838A GB491287A GB 491287 A GB491287 A GB 491287A GB 578/38 A GB578/38 A GB 578/38A GB 57838 A GB57838 A GB 57838A GB 491287 A GB491287 A GB 491287A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- electron
- borate
- jan
- conductive base
- 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
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 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
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000007772 electrode material Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000010409 thin film Substances 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
- Discharge Lamp (AREA)
- Solid Thermionic Cathode (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
491,287. Electrode materials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 7, 1938, No. 578. Convention date, Jan. 30, 1937. Drawings to Specification. [Class 39 (i)] A secondary-electron-emitting electrode comprises a conductive base, for example of nickel, aluminium, silver, copper or alloys thereof, carrying a thin layer of an insulating derivative of an alkaline-earth metal, particularly the borate, on which is deposited an electron emissive layer, preferably an alkali-metal such as caesium or its oxide. The layers are prefer. ably not greater than À001 inch. The electrode exhibits the thin film field emission phenomenon of Malter. The borate is evaporated onto the conductive base from a heated filament. The Specification as open to inspection under Sect. 91 includes a Figure of a single stage multiplier to which the electrode is applied. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US123203A US2147669A (en) | 1937-01-30 | 1937-01-30 | Secondary electron emitting electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491287A true GB491287A (en) | 1938-08-30 |
Family
ID=22407273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB578/38A Expired GB491287A (en) | 1937-01-30 | 1938-01-07 | Improvements in secondary electron emitting electrodes suitable for electron discharge devices |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2147669A (en) |
| BE (1) | BE426040A (en) |
| CH (1) | CH204059A (en) |
| DE (1) | DE750047C (en) |
| GB (1) | GB491287A (en) |
| NL (1) | NL51148C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US2527981A (en) * | 1945-08-23 | 1950-10-31 | Bramley Jenny | Secondary-electron emission |
| US2639963A (en) * | 1948-04-05 | 1953-05-26 | Sylvania Electric Prod | Secondary emitter and method of manufacture |
| US2530946A (en) * | 1949-04-02 | 1950-11-21 | Bell Telephone Labor Inc | Secondary electron emitter |
| US2846338A (en) * | 1954-08-03 | 1958-08-05 | William G Shepherd | Secondary electron emitter |
| US4047999A (en) * | 1974-09-19 | 1977-09-13 | Francis John Salgo | Method of making a mobile ion film memory |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE356578A (en) * | 1927-12-14 | |||
| US2141322A (en) * | 1935-06-25 | 1938-12-27 | Rca Corp | Cascaded secondary electron emitter amplifier |
-
0
- NL NL51148D patent/NL51148C/xx active
- BE BE426040D patent/BE426040A/xx unknown
-
1937
- 1937-01-30 US US123203A patent/US2147669A/en not_active Expired - Lifetime
-
1938
- 1938-01-07 GB GB578/38A patent/GB491287A/en not_active Expired
- 1938-01-28 CH CH204059D patent/CH204059A/en unknown
- 1938-02-01 DE DER101443D patent/DE750047C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE426040A (en) | |
| US2147669A (en) | 1939-02-21 |
| NL51148C (en) | |
| CH204059A (en) | 1939-04-15 |
| DE750047C (en) | 1944-12-11 |
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