发明名称 |
Cold field emitter |
摘要 |
A stable cold field electron emitter is produced by forming a coating on an emitter base material. The coating protects the emitter from the adsorption of residual gases and from the impact of ions, so that the cold field emitter exhibits short term and long term stability at relatively high pressures and reasonable angular electron emission. |
申请公布号 |
US8217565(B2) |
申请公布日期 |
2012.07.10 |
申请号 |
US20110987338 |
申请日期 |
2011.01.10 |
申请人 |
TESSNER, II THEODORE CARL;SCHWIND GREGORY A.;SWANSON LYNWOOD W.;FEI COMPANY |
发明人 |
TESSNER, II THEODORE CARL;SCHWIND GREGORY A.;SWANSON LYNWOOD W. |
分类号 |
H01J19/24;H01J1/304;H01J17/38 |
主分类号 |
H01J19/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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