Presentation Information
[20p-P01-8]Real-time measurement of radioluminescence utilizing phosphate glass with aluminum impurities
〇Wataru Kada1, Sota Orimo1, Tatsuki Amanuma1, Saya Ono2, Satoe Konta2, Ryota Sindo2, Makoto Sakai3, Osamu Hanaizumi1, Yohei Inaba2 (1.Gunma Univ., 2.Tohoku Univ., 3.GHMC)
Keywords:
phosphate glass,real time measurement
Compact and convenient dosimeters are desired for medical diagnosis and treatment in various radiation fields. The phosphate glass radiophotoluminescence (RPL) dosimeter is a well-known personal dosimeter with high reliability. However, their in-situ measurement capability is not yet fully guaranteed due to the build-up effect of silver activators and other factors. We have previously demonstrated the possibility of real-time radiation measurement with phosphate glasses with other impurities like europium from europium oxide (Eu2O3) powder. However, the overlap of fluorescence to the readout wavelength of the silver active center remained an issue to be solved. On the other hand, by actively adding aluminum (Al) and tin (Sn) to phosphate glasses, broadband emission of fluorescence was observed only under the excitation in the deep ultraviolet below 300 nm. In this presentation, we will report a prototype of a real-time measurement device using phosphate glass with aluminum impurities and the preliminary measurement results under the radiation exposure.