Effects of ray irradiation on KMgF3 and KMgF3: Eu2+ crystal

The conversion of Eu3+-> Eu2+ in KMgF3:Eu is almost 100% at the low dopant concentration and the saturant dopant is 0.29% molar fraction. The irradiation damage of KMgF3 crystal by I It X-ray irradiation can recover in about 100 h under experimental condition. After KMgF3:Eu2+ crystal was irradiated by X-ray, the sharp peak emission intensity at about 360 nm cuts down slightly. and the stimulated spectrum was not observed. The changes are obviously different for all the temperature peak intensities of TLS glow curves of KMgF3 crystal irradiated by gamma-ray of different dosages, even if the damage caused by a little dosage irradiation is relatively hard to recover, for example, if the dosage of gamma-ray irradiation is 10(3) Gy, the recovery time of irradiation damage is about 30 d. The sharp peak emission intensity at 360 nm drops linearly with the growth of gamma-ray irradiation dosage.