Radiant energy – Invisible radiant energy responsive electric signalling – With heating of luminophors
Patent
1977-09-21
1980-05-20
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
With heating of luminophors
G01T 111
Patent
active
042041198
ABSTRACT:
A method of thermoluminescent dosimetry employing infrared radiation heating of a dosimeter. An incandescent lamp is used for the source of infrared radiation. The dosimeter is provided with a infrared radiation absorbing layer connected thermally to a thermoluminescent material layer. The infrared radiation absorbing layer is irradiated with infrared radiation, so that thermoluminescent material is not directly irradiated. The lamp is initially powered whereby the dosimeter is heated by infrared radiation of such high intensity as to tend to cause a heat equilibrium in the dosimeter above the temperature where thermal radiation is generated from the dosimeter. Then the power supplied to the lamp is cut or decreased, so that the dosimeter is heated by the afterglow of the lamp. Therefore the rate of temperature rise of the dosimeter becomes quite slow in the latter half of heating process, whereby the temperature of dosimeter easily falls into the required range.
REFERENCES:
patent: 3531641 (1970-09-01), Weissenberg
patent: 3610926 (1971-10-01), Kastner et al.
Ikedo Masaru
Tsutsui Hiroshi
Watari Masafumi
Yamamoto Osamu
Yasuno Yoshitake
Matsushita Electric - Industrial Co., Ltd.
Willis Davis L.
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