G - Physics – 01 – T
Patent
G - Physics
01
T
358/19.1, 73/51.
G01T 1/115 (2006.01) G01T 1/11 (2006.01)
Patent
CA 1089120
TITLE OF THE INVENTION METHOD OF READING THERMOLUMINESCENT DOSIMETER ABSTRACT OF THE DISCLOSURE A method of thermoluminescent dosimetry em- ploying infrared radiation heating of a dosimeter. An in- candescent 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.
287196
Ikedo Masaru
Tsutsui Hiroshi
Watari Masafumi
Yamamoto Osamu
Yasuno Yoshitake
Fetherstonhaugh & Co.
Matsushita Electric Industrial Co. Ltd.
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