Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1978-08-17
1980-04-08
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
340600, G01T 122
Patent
active
041974611
ABSTRACT:
The disclosure relates to a miniaturized radiation chirper for use with a small battery supplying on the order of 5 volts. A poor quality CdTe crystal which is not necessarily suitable for high resolution gamma ray spectroscopy is incorporated with appropriate electronics so that the chirper emits an audible noise at a rate that is proportional to radiation exposure level. The chirper is intended to serve as a personnel radiation warning device that utilizes new and novel electronics with a novel detector, a CdTe crystal. The resultant device is much smaller and has much longer battery life than existing chirpers.
REFERENCES:
patent: 3114837 (1963-12-01), Thomas
patent: 3221317 (1965-11-01), Ferrigno, Jr.
patent: 3878496 (1975-04-01), Erickson
patent: 3999071 (1976-12-01), Siffert et al.
Umbarger C. John
Wolf Michael A.
Gaetjens Paul D.
Howell Janice A.
Lupo R. V.
Smith Alfred E.
The United States of America as represented by the United States
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