Device for generating X-rays

X-ray or gamma ray systems or devices – Source

Reexamination Certificate

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Details

C378S125000, C378S127000

Reexamination Certificate

active

06925151

ABSTRACT:
The invention relates to a device (1) for generating X-rays (57). The device comprises a source (7) for emitting electrons (53) and a liquid metal for emitting X-rays as a result of the incidence of electrons. The device further comprises a displacing member (11) for displacing the liquid metal through an impingement position (55) where the electrons emitted by the source impinge upon the liquid metal. As a result of the flow of liquid metal through the impingement position the heat, which is generated in the impingement position as a result of the incidence of the electrons upon the liquid metal, is transported away from the impingement position.According to the invention, the displacing member (11) has a contact surface (61), which is in contact with the liquid metal in the impingement position (55), and a driving member (31) for moving the contact surface in a direction which, in the impingement position, is substantially parallel to the contact surface. Thus the flow of liquid metal in the impingement position is achieved as a result of viscous shear forces in the liquid metal caused by friction forces between the liquid metal and the moving contact surface. As a result, the necessary pressure of the liquid metal is limited.

REFERENCES:
patent: 4551800 (1985-11-01), Riederer et al.
patent: 4559557 (1985-12-01), Keyes et al.
patent: 4953191 (1990-08-01), Smither et al.
patent: 5052034 (1991-09-01), Schuster
patent: 6185277 (2001-02-01), Harding
patent: 890 246 (1953-09-01), None
PCT International Search Report for International application No. PCT/IB 02/00335.
French Search Report for Patent application No. 200111441 of Apr. 9, 2001.

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