Storage effect in LiRESiO4:Ce3+, Sm3+, RE = Y, Lu phosphor

被引：16

作者：

Sidorenko, AV

Bos, AJJ

Dorenbos, P

van Eijk, CWE

Kahn-Harari, A

Rodnyi, PA

Viana, B

机构：

[1] Delft Univ Technol, Interfac Reactor Inst, NL-2629 JB Delft, Netherlands

[2] ENSCP, UMR 7574, Lab Chim Appl Etat Solide, F-75231 Paris 05, France

[3] State Politech Univ, St Petersburg 195251, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 537卷 / 1-2期

关键词：

cerium; samarium; storage phosphor; stimulated luminescence;

D O I：

10.1016/j.nima.2004.07.239

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Good storage properties after irradiation have been observed in doubly rare-earth-doped LiRESiO4:Ce3+, Sm3+, RE= Y,Lu powders. We present strong arguments that in the studied materials Ce3+ ions play a role of hole trapping and Sm3+ ions of electron trapping centres. Additionally, oxygen vacancies are also involved in electron trapping. however they can be removed by appropriate thermal treatment. During thermal stimulation of irradiated LiRESiO4:Ce3+, Sm-3+,Sm- RE=Y.Lu an electron from Sm2+ is released into the conduction hand formed by SiO4 and further migrates to Ce4+ centers. This causes the TL peak at 340K in LiLuSiO4:Ce3+ Sm3+ and at 400K in LiySiO(4):Ce3+,Sm3+ upon heating rate of 1 Ks. Very fast and efficient photo-stimulated luminescence (PSL) have been observed upon stimulation with an IR laser (gimel = 830 nm). The presented materials can be utilized in Image Plates for X-ray or neutron position sensitive detection. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：81 / 85

页数：5

共 6 条

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