GB766064A - Improvements in electron discharge tubes - Google Patents
Improvements in electron discharge tubesInfo
- Publication number
- GB766064A GB766064A GB868653A GB868653A GB766064A GB 766064 A GB766064 A GB 766064A GB 868653 A GB868653 A GB 868653A GB 868653 A GB868653 A GB 868653A GB 766064 A GB766064 A GB 766064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zirconium
- occluder
- bombardment
- hydride
- march
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/04—Cathodes
- H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
766,064. Thermionic valves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 29, 1954 [March 30, 1953; March 30, 1953; May 24, 1954], Nos. 8686/53, 8688/53 and 15237/54. Drawings to Specification. Class 39(1). [Also in Group XL(c)] A thermionic valve cathode is heated by ion bombardment in normal operation or during degassing or processing; gas is released by heating an occluder substance and subsequently reabsorbed by allowing the occluder to cool. The ions are directed on to the cathode by an applied electric field. An occluder of hydrogen consists of an indirectly heated nickel gauze cylinder coated with a suspension of zirconium or zirconium hydride, titanium or titanium hydride, or thorium. The hydrogen pressure is of the order of 10-<4> to 10-<2> mm. of mercury. A rare gas may be used. In a magnetron initial ion bombardment is followed by electron back bombardment. A steady field maintains continuous electron back bombardment in pulsed working. A circuit for stabilizing the magnets on current is described (see Group XL(c)). Details are given of the preparation and activation of a pellet of zirconium or zirconium hydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868653A GB766064A (en) | 1953-03-30 | 1953-03-30 | Improvements in electron discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB868653A GB766064A (en) | 1953-03-30 | 1953-03-30 | Improvements in electron discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB766064A true GB766064A (en) | 1957-01-16 |
Family
ID=9857280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868653A Expired GB766064A (en) | 1953-03-30 | 1953-03-30 | Improvements in electron discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB766064A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1297766B (en) * | 1961-02-03 | 1969-06-19 | Raytheon Co | Lauffeld magnetron tube with cold cathode |
| US3474282A (en) * | 1965-06-30 | 1969-10-21 | Siemens Ag | Electron gun for electron tubes in cathode heater device |
| US4260934A (en) * | 1976-05-05 | 1981-04-07 | U.S. Philips Corporation | Electric device provided with a switch which is designed as a discharge tube |
-
1953
- 1953-03-30 GB GB868653A patent/GB766064A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1297766B (en) * | 1961-02-03 | 1969-06-19 | Raytheon Co | Lauffeld magnetron tube with cold cathode |
| US3474282A (en) * | 1965-06-30 | 1969-10-21 | Siemens Ag | Electron gun for electron tubes in cathode heater device |
| US4260934A (en) * | 1976-05-05 | 1981-04-07 | U.S. Philips Corporation | Electric device provided with a switch which is designed as a discharge tube |
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