X-ray and gamma ray electron beam imaging tube having a sensor-t

Details X-ray and gamma ray electron beam imaging tube having a sensor-t X-ray and gamma ray electron beam imaging tube having a sensor-t

1993-03-12

1994-04-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313548, 378 582, H01J 4014

Patent

active

053069072

ABSTRACT:
A large area video camera is suitable for high energy imaging applications. The sensor-target of the camera tube is composed of TlBr, TlI, PbI.sub.2, or PbBr.sub.2 or a two layer structure comprising CsI and a photoconductive layer of materials such as amorphous silicon, amorphous selenium, cadmium sulphide, antimony trisulfide or antimony sulphide oxysulphide. A disclosed tube incorporates various modifications for dealing with problems associated with stray capacitance, premature electron leakage and secondary electron emission.

REFERENCES:
patent: 4069438 (1978-01-01), Houston et al.
patent: 4862006 (1989-08-01), Vieux et al.

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