The Effect of Self-Absorption on the Scintillation Properties of Ce3+ Activated LaBr3 and CeBr3

被引：19

作者：

ter Weele, David N. ^{[1
]}

Schaart, Dennis R. ^{[1
]}

Dorenbos, Pieter ^{[1
]}

机构：

[1] Delft Univ Technol, NL-2628 CN Delft, Netherlands

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2014年 / 61卷 / 01期

关键词：

CeBr3; Decay time constant; emission; energy resolution; LaBr3 : Ce; photoelectron yield; pulse shape; self-absorption; TOF-PET; RESOLUTION;

D O I：

10.1109/TNS.2013.2296101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Experimental studies of LaBr3 doped with 5%, 10%, 20% and 30% Ce3+ and CeBr3 are performed for application in TOF-PET. X-ray excited emission spectra, decay time constants, photoelectron yields and energy resolutions are measured from 100 K to 600 K. The results show a strong temperature and Ce3+ concentration dependence, which is mostly explained by Ce3+ self-absorption. We modeled how self-absorption affects the scintillation pulse shape and what the consequences are for the detector timing resolution. It shows that self-absorption elongates the decay time constant, whilst it does not affect the scintillation rise time.

引用

页码：683 / 688

页数：6

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