Electron beam source for use with varying sizes of crucibles
US6012413A · kind A · utility
8Cited by
0References
1Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 10, 1998 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Mar 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/3128
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron beam source provides beam focusing by placing magnets under the crucible. The location of the magnets, operating in conjunction with the remaining magnetic and electromagnetic structure, permits varying sizes of crucibles to be used without redesign of the remainder of the electron beam source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.