| 摘要 |
PROBLEM TO BE SOLVED: To provide a radioactivity measurement device capable of accurately measuring a radioactivity intensity even when a radioactivity distribution is not uniform in a measured sample.SOLUTION: A radioactivity measurement device 10 has: a pair of radiation detectors 11, 12 for detecting radiation emitted from a measured sample 110 and outputting signal pulses; pulse counting parts 41, 42 for respectively counting signal pulses output by the radiation detectors 11, 12 and outputting pulse counting values; and a calculation device 70 configured to calculate a position of the center of gravity G and a radioactivity intensity A in a radioactivity distribution on a straight line linking between sensitive parts 11a, 11b of the radiation detectors 11, 12 by using a comparison of pulse counting values output by the pulse counting parts 41, 42 per unit time and a distance of a passage of the straight line through the measured sample 110.SELECTED DRAWING: Figure 1 |
