Devices for measuring ionizing radiations

Details Devices for measuring ionizing radiations Devices for measuring ionizing radiations

1983-10-19

1985-10-08

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250374, G01T 118

Patent

active

045462577

ABSTRACT:
The invention provides a device for measuring ionizing radiations, comprising a Geiger-Muller tube (1) whose high supply voltage is obtained from pulses which are emitted (by 6,7) at a constant relatively low frequency as long as a predetermined threshold is not exceeded by the intensity of the radiation and (by 6,7,4 and 32) at an increasing frequency depending on the output of the tube, after said threshold has been exceeded. Thus, alarm dosimeters having very long independent operation may be formed.

REFERENCES:
patent: 3428807 (1969-02-01), Jones et al.
patent: 4417217 (1983-11-01), Sugiyama
Electronic Engineering, Jul. 1979, vol. 51, No. 625 (Harris).

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