X-ray radiator with thermionic emission of electrons from a...

Details X-ray radiator with thermionic emission of electrons from a... X-ray radiator with thermionic emission of electrons from a...

2006-09-12

2008-08-12

Song, Hoon (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S144000

Reexamination Certificate

active

07412033

ABSTRACT:
An x-ray radiator has a vacuum housing that can rotate around an axis, a cathode that thermionically emits electrons upon irradiation thereof by a laser beam, an anode that emits x-rays upon being struck by the electrons, an insulator that is part of the vacuum housing and that separates the cathode from the anode, electrodes or terminals to apply a high voltage between the anode and the cathode to accelerate the emitted electrons toward the anode to form an electron beam, a drive arrangement for rotation of the vacuum housing around its axis, an arrangement for cooling components of the x-ray radiator, and an arrangement that directs and focuses the laser beam from a stationary source that is arranged outside of the vacuum housing onto a spatially stationary laser focal spot on the cathode.

REFERENCES:
patent: 4821305 (1989-04-01), Anderson
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patent: 2004/0022360 (2004-02-01), Price et al.
patent: 2005/0058253 (2005-03-01), Inazuru et al.
patent: 2006/0233307 (2006-10-01), Dinsmore
patent: 87 13 0424 (1989-03-01), None
patent: 0 147 009 (1989-12-01), None

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