Three terminal ion chambers

Details Three terminal ion chambers Three terminal ion chambers

1995-11-09

1997-01-14

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

H01J 4702

Patent

active

055942520

ABSTRACT:
A three terminal ionization chamber includes a first electrode coupled to a bias voltage source spaced apart from a second electrode coupled to ground. A third terminal is provided which is positioned between the first and second electrodes. Measurement circuitry may be coupled to the third terminal to measure charge indicative of the amount of radiation incident to the chamber.

REFERENCES:
patent: 5019711 (1991-05-01), Antonuk
patent: 5025376 (1991-06-01), Bova
patent: 5032729 (1991-07-01), Charpak
patent: 5233990 (1993-08-01), Barnea
patent: 5262649 (1995-11-01), Antonuk
M. van Herk, "Physical Aspects of a Liquid-Filled Ionization Chamber with Pulsed Polarizing Voltage"; Medical Physics, vol. 18, No. 4, Jul./Aug. 1991 pp. 692-702.

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