Radiant energy – Invisible radiation responsive nonelectric signalling – Luminescent device
Patent
1975-04-07
1976-12-07
Dixon, Harold A.
Radiant energy
Invisible radiation responsive nonelectric signalling
Luminescent device
250338, 2523014H, H05B 3300
Patent
active
039964728
ABSTRACT:
Thermoluminescent materials have been found suitable for measuring long term exposures to low level ionizing radiation. Oxyhalides of lanthanum, gadolinium and yttrium, including the oxychlorides and oxybromides are activated with terbium and have been found to be most efficient oxygendominated phosphors having thermoradiant efficiencies with excitation by low level ionizing radiation. Thermoluminescence response increases when the previous materials have hafnium and zirconium additives.
REFERENCES:
patent: 3617743 (1971-11-01), Rabatin
patent: 3666676 (1972-05-01), Rabatin
patent: 3738856 (1973-06-01), Masi
patent: 3767588 (1973-10-01), Otomo et al.
patent: 3905912 (1975-09-01), Mathers
Dixon Harold A.
General Electric Company
Kempton Lawrence R.
McDevitt John F.
Neuhauser Frank L.
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