Portable Wide-range Radiac Instrument Using a Solid-state Electrometer PDF Download

Author: Gerald F. Healey
Publisher:
ISBN:
Category :
Languages : en
Pages : 23

Get Book Here

Book Description
A wide range radiac instrument was developed to measure gamma radiation dose-rates from 1 mR/hr to 1000 R/hr in six linear ranges. The circuit is a hybrid type using an ion chamber for the four high ranges of 0-1, 10, 100, 1000 R/hr, and a G.M. tube, for the two low ranges 0-10, 100 mR/hr, contained in a detachable probe. An interesting feature of the circuit is the solid-state electrometer amplifier which uses insulated gate field-effect transistors in the input stage and its combination with a Geiger Mueller frisking probe to attain increased sensitivity. (Author).