发明名称 |
FIELD EMISSION COLD CATHODE |
摘要 |
<p>A field emission cold cathode (11) for use in vacuum tubes. A carbon velvet material (25) is comprised of high aspect ratio carbon fibers embedded perpendicular to a base material. The tips and/or the shafts of the carbon velvet material (25) are coated with a low work function cesiated salt. The base material of the carbon velvet material (25) is bonded to a cathode surface (27). The cold cathode (11) emits electrons when an electric field is applied, even at operating temperatures less than 900 DEG C.</p> |
申请公布号 |
WO2004010450(A1) |
申请公布日期 |
2004.01.29 |
申请号 |
WO2002US21283 |
申请日期 |
2002.07.18 |
申请人 |
UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
SHIFFLER, DONALD, A., JR. |
分类号 |
H01J1/304;H01J9/02;H01J23/04;(IPC1-7):H01J1/304 |
主分类号 |
H01J1/304 |
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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