Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1979-08-22
1981-04-07
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
250374, G01T 118
Patent
active
042608929
ABSTRACT:
When subjected to radiation overload existing Geiger-Mueller counters may give an erroneously low reading, resulting in possible hazard to personnel. The instant invention discloses simple and inexpensive apparatus to remedy this dangerous shortcoming. Depending on the geometry of the detector tube, two possible failure modes have been identified, and circuitry is disclosed to detect the existence of these respective failure modes. The disclosed apparatus indicates the absence of an overload condition, in addition to signaling, by both visible and audible means, the existence of excessive radiation that might result in erroneously low reading of the Geiger-Mueller counter.
REFERENCES:
patent: 2963588 (1960-12-01), Wilson
patent: 2982857 (1961-05-01), Clarke
patent: 3366791 (1968-01-01), Markow
Melissinos, Experiments in Modern Physics, "Gaseous Ionization Instruments", Academic Press, pp. 175-177.
Kovacs Terrence
Mills, Jr. Allen P.
Pfeiffer Loren N.
Bell Telephone Laboratories Incorporated
Wilde Peter V. D.
Willis Davis L.
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