Charged particle emission source structure
US4721878A · kind A · utility
45Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1986 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Jun 4, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/06316
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charged particle emission source structure comprising a needle-like electrode for emission of charged particles, a reservoir for a liquid metal for wetting the surface of the needle-like electrode, heat-generating support members for heating the liquid metal and holding the reservoir or the needle-like electrode, and an extraction electrode for applying an electric field as between it and the needle-like electrode, which is characterized in that conductive partitions hardly wettable with the liquid metal are provided between the heat-generating support members and the reservoir or the needle-like electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.