RADIATION MEASURING INSTRUMENT AND EVALUATING INSTRUMENT FOR RADIATION DOSAGE RATE DISTRIBUTION

摘要

PURPOSE:To save labor and to reduce the exposure of a radiation measuring operator and to measure a radiation dosage rate by providing a radiation detector, a shield body, a driving device, a range finder, etc. CONSTITUTION:A radiation measuring instrument 1 is constituted by arranging a measurement part 4 on the universal head 3 of expansible measuring instrument support legs 2. A preamplifier 5 connected to a measurement part 4 is arranged under the universal head 3 and an amplified signal is sent to a signal processing part by a cable 6 when necessary. The measurement part 4 is equipped with the radiation detector 11 arranged in the shield body 9 with an opening part 8 and the range finder 12 fitted to the opening part 8. A driving mechanism which directs the opening part 8 of the shield body in various directions is arranged on the universal head 3. Then, the measuring instrument 1 has the universal head 3 rotated in various directions under the control of a computer and the opening part 8 is set in the direction of radiation source equipment, etc., in a target area successively; and a radiation dosage rate at each position and information on the distance between those positions and radiation measuring instrument 1 are stored in a computer.