X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1985-09-26
1987-06-16
Howell, Janice A.
X-ray or gamma ray systems or devices
Source
Electron tube
378141, 378144, H01J 3510
Patent
active
046741097
ABSTRACT:
An x-ray tube device with an anode target capable of rotation and a cathode which generates electrons causing them to collide with the target set in a vacuum envelope, and with a shaft which supports and rotates the anode projecting outside the envelope. This x-ray tube device has a structure such that the target is cooled by coolant flowing through coolant channels in the shaft. A vacuum seal is maintained by seal means such as magnetic fluid seal between the envelope and the rotating shaft. The envelope and coolant channels are best maintained at ground potential, and thus have an intermediate potential, with high positive and negative voltages supplied to the anode target and cathode.
REFERENCES:
patent: 2926269 (1960-02-01), Broad
patent: 4130773 (1978-12-01), Kussel
patent: 4405876 (1983-09-01), Iverson
patent: 4468800 (1984-08-01), Friedel
Howell Janice A.
Kabushiki Kaisha Toshiba
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