螢光ガラス線量計による測定における誤差の検討

抄録

The author studied an error of numerical value in measurement with fluoro glass dosimeter. The fluoro glass dosimeter. The fluoro glass used in this study was FD-R1-1 (Toshiba) and had a diameter of 1mm and a length of 6mm. The fluorh meter was FGD-3B (Toshiba). The author applied electron beam of Betatron to the fluoro glass dosimeter in a phantom made of acrylite. The fluctuation of the numerical value of the fluoro meter in a short time was about ±0.15R ; the error of the numerical value, which was probably due to the play of the apparatus, was about 1.56%. The response of the fluoro glass showed a good linearity, extending 1-10^3R of the fluorescence ; the fluorescence of the back ground of the fluoro glass was about 0.7±0.07R (O/x=10%). In this experiment, the author studied also the response of the fluoro glass, using about 100 fluoro glasses. The result was as follows ; Fluorescence The standard deviation in the response [table] It may be said through the comparative study over foreign literature that these numerical value showed better efficiency of this fluoro glass dosimeter the that of foreign ones. The fading of the fluorescence reaches to 5% in 100days and the value of the fading is apot to be divided. The fading is caused also by repeating the measurement of the fluorescence. The author made a futher examination on the error in the measurement with fluoro glass dosimeter through these results mentioned above and other literatures.