GB522752A - Improvements in or relating to photoelectric devices comprising electron multipliers - Google Patents
Improvements in or relating to photoelectric devices comprising electron multipliersInfo
- Publication number
- GB522752A GB522752A GB3653338A GB3653338A GB522752A GB 522752 A GB522752 A GB 522752A GB 3653338 A GB3653338 A GB 3653338A GB 3653338 A GB3653338 A GB 3653338A GB 522752 A GB522752 A GB 522752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- antimony
- cathode
- deposited
- caesium
- relating
- 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
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/04—Electrodes
- H01J40/06—Photo-emissive cathodes
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
522,752. Photo cells. BAIRD TELEVISION Ltd., and SOMMER, A. Dec. 15, 1938, Nos. 36533/38, 105/39 and 14415/39. [Class 39 (i)] The photo-cathode in a cell is formed by alloying an alkali metal with another metal baking the composite layer produced and thereafter oxidizing. On a support a layer of antimony is deposited and while this is maintained at a temperature between 140 and 190‹C. caesium is distilled thereon ; or the caesium and antimony may be deposited alternately; or the two elements may be deposited simultaneously. When used as the cathode in an electron-multiplier, the electrodes of the multiplier section are first oxidized and then caesiated after which antimony is deposited on the primary cathode and then caesium is distilled thereon, the cathode being subsequently baked and oxidized. Bismuth or arsenic may be used instead of antimony.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3653338A GB522752A (en) | 1938-12-15 | 1938-12-15 | Improvements in or relating to photoelectric devices comprising electron multipliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3653338A GB522752A (en) | 1938-12-15 | 1938-12-15 | Improvements in or relating to photoelectric devices comprising electron multipliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB522752A true GB522752A (en) | 1940-06-26 |
Family
ID=10389022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3653338A Expired GB522752A (en) | 1938-12-15 | 1938-12-15 | Improvements in or relating to photoelectric devices comprising electron multipliers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB522752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1193618B (en) * | 1954-03-08 | 1965-05-26 | Rca Corp | Vacuum photocell with a layered cathode |
-
1938
- 1938-12-15 GB GB3653338A patent/GB522752A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1193618B (en) * | 1954-03-08 | 1965-05-26 | Rca Corp | Vacuum photocell with a layered cathode |
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