Reflection mode alkali photocathode, and photomultiplier using the same
US5633562A · kind A · utility
2Cited by
14References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1994 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Oct 5, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to an improvement of a reflection mode alkali photocathode which relies on controlling a deposition weight of antimony. The reflection mode alkali photocathode according to this invention includes a thin layer of antimony directly deposited on a base substrate and activated by alkali metals. The thin film of antimony is deposited in a thickness of below 100 .mu.g/cm.sup.2. This reflection mode photocathode is suitably usable in photomultipliers. As the base substrate, nickel, aluminium and stainless, etc. are used. As the alkali metals, cesium, potassium, sodium and rubidium are usable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.