Charge transport tactical dosimeter

Details Charge transport tactical dosimeter Charge transport tactical dosimeter

1975-10-23

1977-04-19

Dixon, Harold A.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250377, 250378, G01T 118

Patent

active

040190587

ABSTRACT:
A quartz fiber electroscope shunted by a variable capacitor is periodically coupled to a radiation detection capacitor formed of material of a relatively large atomic number, e.g. aluminum, completely surrounded by a material of lesser atomic number, e.g. polyethylene. An electrical charge is induced by neutron or gamma radiation on the material of relatively large atomic number which charge is then coupled to the electroscope and variable capacitor combination. The variable capacitor is set at its maximum when the voltage is transferred from the detection capacitor. The variable capacitor is then reduced, thus raising the voltage on the electroscope with the dose being determined by the reduction in capacitance necessary to raise the indicated electrometer voltage to a predetermined magnitude. The variable capacitor includes indicia thereon which is calibrated such that the voltage change provides a direct reading of the charge transfer and consequently dosage.

REFERENCES:
patent: 2751544 (1956-06-01), Stirnkorb
patent: 2980799 (1961-04-01), Bongrain et al.
patent: 3249755 (1966-05-01), Pawar

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