Channel plate electron multiplier
US4422005A · kind A · utility
12Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1981 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a channel plate electron multiplier having a stack of perforated conducting sheet dynodes insulated from one another, electrons incident on the input face of the stack which do not enter the channels give rise to unwanted secondary electrons which move transverse to the channels in the space in front of the stack. These secondary electrons enter channels remote from the point of incidence and thereby degrade the definition and contrast of an electron image transmitted by the channel plate. A layer of material having a low secondary electron emission, which may be on a sheet carrier, is provided on the stack input face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.