X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1989-06-21
1990-01-16
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Source
Electron tube
378136, 378137, H01J 3506
Patent
active
048948535
ABSTRACT:
A cathode electrode improvement is disclosed which utilizes a front focus slot having a diverging cross-sectional area to focus an electron beam within an x-ray tube to provide a high emission, small area focal spot.
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"Electron Flow in the Conventional X-Ray Tube", IEEE Transactions on Electron Devices, vol. ED-32, No. 3, Mar. 1985, pp. 654-657.
Edelman Lawrence C.
Fields Carolyn E.
Porta David P.
Siemens Medical Systems Inc.
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