| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable accurately measuringγand X-ray in wide energy range, by changing the setting of separate measurement ofβ-ray measurement to the setting ofγand X-ray only. SOLUTION: A reading part 10 measures the fluorescent light intensity from 3 glass elements of a fluorescent glass dose meter for separate measurement ofβ-ray. In a personal computer 30 for system control, each fluorescence intensity of the measured results, R1 , R2 and R4 are inputted and an energy estimation means 32 estimatesγand X-ray energy. That is, ifγand X-ray effective energy estimated with R1 and R2 is 40keV or less, low energy range is specified with the detection quantities R2 and R4 , andγand X-ray effective energy estimation value Er is calculated based on the detection quantities R2 and R4 by using an approximation equation for low energy range. If it is over 40keV, the estimation value Er is calculated based on the detection quantities R2 and R4 by using an approximation equation for high energy range. Then, the personal computer 30 calculates each of equivalent doses H of 1cm, 3mm and 70μm based on the detection quantities R1 , R2 and R4 with a dose measuring means 33 and indicates the result on a display 34.</p> |
