Contact ionization apparatus
US4246481A · kind A · utility
3Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Feb 8, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J27/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement wherein atoms are ionized by contact with a heated ionizing surface and the ions are accelerated along an acceleration path towards an acceleration electrode, and wherein, in order to achieve high current densities, the heated surface is convexly curved towards the acceleration electrode and has a radius of curvature which is substantially smaller than the length of the acceleration path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.