X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1990-07-10
1991-11-12
Westin, Edward P.
X-ray or gamma ray systems or devices
Source
Electron tube
378121, 378136, H01J 3530
Patent
active
050654209
ABSTRACT:
Using electrostatic forces for controlling the location of the focal spot of the electron beam on the anode of an X-ray tube, the location is determined by a pair of detectors.
REFERENCES:
patent: 4689809 (1987-08-01), Sohval
patent: 4748650 (1988-05-01), Ammaun
patent: 4819260 (1989-04-01), Haberrecker
patent: 4827494 (1989-05-01), Koenigsberg
Elscint Ltd.
Porta David P.
Westin Edward P.
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