Application of optical instrumentations to reactor dosimetry for material irradiation study

Optical dosimetry, utilizing the radioluminescence, the Cerenkov radiation, and the radiation induced optical absorption, has attractive features. However, it has a serious setback, namely, the optical signal changes in the course of irradiation and complicated calibration would be needed. Also, the intensity of radioluminescence would depend complicatedly on energy and kind of incident ions and quanta. Here, optical dosimetry, which could measure the electronic excitation dose rate, the atomic displacement, and the thermal neutron flux, separately and in-situ, is proposed, by analyzing behaviors of radioluminescence peaks in the fused silica (SiO₂), the chromium doped alumina (Al₂O₃-Cr₂O₃) and the Li₂ZrO₃).