X-ray detection characteristics of cadmium sulfide as a multifunction dosimeter

Summary form only given. Measurements of the voltage responses of cadmium sulfide (CdS) to X-ray exposure were performed to evaluate its performance as a multifunction X-ray dosimeter. The responses of CdS to X-ray energy were observed according to the various exposure conditions. In this experiment, the peak-arrival time of CdS output voltage was measured to obtain the linear relationship, with X-ray exposure time. The regression analysis of the voltage response of CdS on the tube-potential variation shows y=0.093X - 4.067(R/sup 2/ = 0.98369, /spl sigma/ = 0,22), And that of the peak-arrival time of CdS output signal on X-ray exposure time was r = 0.00088(sec/mAs, R/sup 2/ = 0.986, /spl sigma/ = 0.00268) at 50 kVp of tube-potential and r = 0.00082(sec/mAs, R/sup 2/ = 0.979, /spl sigma/ = 0.00333) at 70 kVp. In conclusion, this study shows that CdS not only linearly responds to X-rays but also is feasible as an X-ray sensor for multifunction dosimeter-related instruments.