Effects of Ray Irradiation on KMgF3 and KMgF3∶Eu2+ Crystal

Chem. J. Chinese Universities

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Effects of Ray Irradiation on KMgF₃ and KMgF₃∶Eu²⁺ Crystal

MO Feng-Shan^1,3, ZHU Guo-Xian^1,3, XIA Chang-Tai², SHI Chun-Shan^3*

1. School of Life Science and Chemistry, Zhanjiang Normal College, Zhanjiang 524048, China;
2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
3. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry,
Chinese Academy of Sciences, Changchun 130022, China

Received:2005-11-02 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: SHI Chun-Shan

Abstract

Abstract: 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 1 h 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 thetemperature peak intensities of TLS glow curves of KMgF₃crystal irradiated by γ-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 γ-ray irradiation is 103 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 γ-ray irradiation dosage.

Key words: KMgF3, Eu2+, X-ray, γ-ray

CLC Number:

O612

TrendMD:

MO Feng-Shan^1,3, ZHU Guo-Xian^1,3, XIA Chang-Tai², SHI Chun-Shan^3*. Effects of Ray Irradiation on KMgF₃ and KMgF₃∶Eu²⁺ Crystal[J]. Chem. J. Chinese Universities, doi: .

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Effects of Ray Irradiation on KMgF₃ and KMgF₃∶Eu²⁺ Crystal

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