发明名称 |
MAGNETICALLY INSULATED COLD-CATHODE ELECTRON GUN |
摘要 |
<p>A system and method of magnetically insulating the cathode of a cold-cathode electron gun is achieved. A strong magnetic field is applied in the vicinity of the cold cathode to deflect and constrain the flow of electrons emitted from structures within the electron gun. The magnetic field largely prevents re-reflected primary and secondary electrons from reaching the cathode, thereby improving the operation and increasing the life of the cold-cathode electron gun. In addition, the insulating magnetic field improves electron beam focusing and enables a reduction in the magnitude of static electric focusing fields employed in the vicinity of the cold cathode, further reducing the electron gun's susceptibility to destructive arcing.</p> |
申请公布号 |
EP2446456(A1) |
申请公布日期 |
2012.05.02 |
申请号 |
EP20100792529 |
申请日期 |
2010.06.15 |
申请人 |
L-3 COMMUNICATIONS CORPORATION |
发明人 |
WHALEY, DAVID, RILEY;DUGGAL, RAMON;ARMSTRONG, CARTER, MICHAEL |
分类号 |
H01J25/34;H01J1/52;H01J3/40;H01J37/02;H01J37/06;H01J37/07 |
主分类号 |
H01J25/34 |
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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