| 摘要 |
<p>PURPOSE:To facilitate the production and assembly of respective thermal fluorescent dosimeter element parts and to improve the accuracy of detecting an exposure dose by covering one of the two elements with a filter and multiplying the detected values of the two elements respectively by prescribed coeffts. to determine the exposure dose. CONSTITUTION:The filters 6 for attenuating exposing rays respectively consisting of disk 5 and tin plates are mounted to the holder 4 of the thermal fluorescent dosimeter elements (TLD) 1, 2 in the part where the TLD 1, 2 are superposed. The TLD plate 3 subjected to the irradiation of radiations in the holder 4 is heated by a heater 12 in a heating part 10 and the thermal fluorescence is inputted via a photomultiplier 14, an amplifier 16, a voltage-frequency converter 17, and a counter 18 to a microcomputer 19. The detected values are multiplied by the prescribed coeffts. and are subjected to necessary corrections to calculate the radiation exposure. The calculated exposure is displayed on a display means 20. The production and assembly of the respective element parts are facilitated in this way and the accuracy of detecting the exposure dose is improved.</p> |
