X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1988-07-21
1990-01-02
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Source
Electron tube
378127, 378144, H01J 3510
Patent
active
048918318
ABSTRACT:
A method for generating X-rays in an X-ray tube, comprises the steps of: rotating an X-ray target of a rotating anode, the X-ray target having a metal coated layer thereon; applying electron beams emitted from a cathode onto the metal coated layer of the X-ray target; and offsetting thermal deformation of the X-ray target due to the application of the electron beams by deformation of the X-ray target due to centrifugal force, thereby maintaining a position of the X-ray target in a direction of the application of the electron beams, at a room temperature of the X-ray target, thus generating the X-rays.
REFERENCES:
patent: 4145628 (1979-03-01), Iwasaki
patent: 4276493 (1981-06-01), Srinivasa et al.
patent: 4482837 (1984-11-01), Koizumi et al.
patent: 4799250 (1989-01-01), Penato et al.
patent: 4800581 (1989-01-01), Kujirai et al.
Baba Noboru
Inamura Ichiro
Kagohara Hiromi
Miyoshi Tadahiko
Nakagawa Yusaku
Fields Carolyn E.
Hitachi , Ltd.
Porta David P.
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