Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1981-09-01
1983-11-15
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
2503361, G01T 122
Patent
active
044152370
ABSTRACT:
A radiation detector readout circuit is provided which produces a radiation dose-rate readout from a detector even though the detector output may be highly energy dependent. A linear charge amplifier including an output charge pump circuit amplifies the charge signal pulses from the detector and pumps the charge into a charge storage capacitor. The discharge rate of the capacitor through a resistor is controlled to provide a time-dependent voltage which when integrated provides an output proportional to the dose-rate of radiation detected by the detector. This output may be converted to digital form for readout on a digital display.
REFERENCES:
patent: 4243885 (1981-01-01), Agouridis et al.
patent: 4255659 (1981-03-01), Kaufman et al.
patent: 4301367 (1981-11-01), Hsu
Walford et al., "The Development and Application of Coaxial CdTe Medical bes for Use in the Clinical Environment", IEEE Trans. on Nuc. Sci., vol. NS-20, pp. 318-328, 1973.
Wolf et al., "Use of a CdTe Detector in a Tiny Personal Radiation Chirper", IEEE Trans. on Nuc. Sci., vol. NS-26, No. 1, Feb. 1979.
Besha Richard G.
Breeden David E.
Hamel Stephen D.
Howell Janice A.
The United States of America as represented by the Department of
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