Electron source regeneration method
US11315748B2 · kind B2 · utility
0Cited by
9References
9Claims
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Key dates
| Filing date | Dec 27, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Dec 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/0635
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a method of regenerating an electron source, the electron source including at least one emission site fixed on a needle tip, and the emission site including a reaction product formed by metal atoms and gas molecules. The method includes regenerating the electron source in situ if an emission capability of the electron source satisfies a regeneration condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.