X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1987-12-18
1990-11-06
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Electron tube
378140, 378143, H01J 3506
Patent
active
049691732
ABSTRACT:
The electron-emissive element in an X-ray tube is constructed so as to be loop-shaped so that an electron target which is also loop-shaped can be formed on an anode. Notably for target transmission tubes having an integrated window-anode element, a substantial reduction of the window temperature can thus be achieved. Inter alia because of the lower temperature gradients, the window can be constructed to be thinner; however, its service life is substantially prolonged and the radiation efficiency of the tube is increased.
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Church Craig E.
Draus Robert J.
U.S. Philips Corporation
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