Afterglow Suppression by Codoping with Bi in CsI:Tl Crystal Scintillator

被引：32

作者：

Totsuka, Daisuke ^{[1
,3
]}

Yanagida, Takayuki ^{[2
]}

Fujimoto, Yutaka ^{[3
]}

Yokota, Yuui ^{[3
]}

Moretti, Federico ^{[4
]}

Vedda, Anna ^{[4
]}

Yoshikawa, Akira ^{[2
,3
]}

机构：

[1] Nihon Kessho Kogaku Co Ltd, Gunma, Japan

[2] New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 9808579, Japan

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[4] Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy

来源：

APPLIED PHYSICS EXPRESS | 2012年 / 5卷 / 05期

基金：

日本学术振兴会;

关键词：

TL CRYSTALS; RADIOLUMINESCENCE;

D O I：

10.1143/APEX.5.052601

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystals of CsI, CsI:Tl, and CsI:Tl, Bi were grown by the vertical Bridgman method. We studied the effect of Bi3+ codoping on the CsI:Tl X-ray-induced afterglow. Thermally stimulated luminescence measurements were carried out in order to investigate the role of traps. The results showed a remarkable reduction of afterglow, of about an order of magnitude, and of trap concentration by Bi codoping. These improvements could be related to a possible role of Bi in the compensation of intrinsic nonstoichiometry defects. (c) 2012 The Japan Society of Applied Physics

引用

页数：3

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