Personal radiation dosimeter

Details Personal radiation dosimeter Personal radiation dosimeter

1984-11-09

1986-08-12

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

2503361, G01T 118

Patent

active

046058583

ABSTRACT:
A radiation dosimeter includes a plurality of air wall type ionization chambers for radiation detection. Each ionization chamber is connected in series with a selectively actuable switching element under the control of a data processor. The ionization chamber switching element pairs are connected in parallel and the entire group is further connected in series with a load resistor and a source of known potential. A voltage threshold detector is connected across the load resistor and is effective to develop a signal proportional to the peak potential appearing across the load resistor when each of the switching elements is actuated to recharge the various ionization chambers. The voltage peak is proportional to the radiation rate. An A/D converter converts the output of the voltage threshold detector into useful data for a data processor which performs the functions of process control and calculation of radiation rate and cumulative dosage.

REFERENCES:
patent: 3711705 (1973-01-01), Barkowski et al.
patent: 3878496 (1975-04-01), Erickson
patent: 3959653 (1976-05-01), Lee et al.
patent: 3984690 (1976-10-01), Marshall, III et al.

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