X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2007-10-09
2007-10-09
Yun, Jurie (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S136000, C378S143000
Reexamination Certificate
active
10957878
ABSTRACT:
An x-ray source for producing a uniformly intense area x-ray beam. The x-ray source includes a vacuum chamber. An area electron emitter is disposed at a first end of the vacuum chamber. A target material is disposed at a second end of the vacuum chamber and spaced apart from the area electron emitter. The area electron emitter and the target material are correspondingly shaped and/or correspondingly curved. The x-ray source also includes at least one high voltage power source. The area electron emitter is electrically connected to a negative pole of one of the at least one high voltage power source and the target electrically connected to a positive pole of one of the at least one high voltage power source.
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J.L. Cronin inModern dispenser cathodes, IEE Proc., vol. 128, Pt. 1, No. 1, (Feb. 1981).
Khelashvili Gocha
Morrison Timothy I.
Nesch Ivan
Illinois Institute of Technology
Pauley Petersen & Erickson
Yun Jurie
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