Radiant energy – Invisible radiant energy responsive electric signalling – Including ionization means
Patent
1987-01-27
1989-02-14
Wan, Gene
Radiant energy
Invisible radiant energy responsive electric signalling
Including ionization means
250374, G01T 1185
Patent
active
048048470
ABSTRACT:
The radiation detector includes tissue equivalent bubbles of plastic defining volumes of gas to be ionized by radiation. One or more integrated circuits (ICs) are disposed below the volumes of gas and a collecting electrode on the IC is in direct contact with the gas. Circuitry for generating an electric field within the volume of gas moves the ions therein to the collecting electrode. The collecting electrode is part of an amplifying circuit disposed within the IC. The output from the amplifier is representative of the collected ions and therefore representative of the radiation. The signal from the amplifier is send to an interface which conditions, buffers and stores the signal. The radiation dose and dose rate are computed in the interface. A communications section transfers that data from the radiation detector. A separate calibration and display unit calibrates the interface by controlling The conditioning of the signal. An area monitor and air monitor are further enhancements of the radiation detector.
REFERENCES:
patent: 3366790 (1968-01-01), Zajorites et al.
patent: 4342913 (1982-08-01), Shepherd
patent: 4631412 (1986-12-01), Turlej
patent: 4642463 (1987-02-01), Thoms
Medrad Inc.
Wan Gene
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