Optimization of a neutron image plate detector with low γ-sensitivity

被引：12

作者：

Masalovich, S

Ioffe, A

Schlapp, M

von Seggern, H

Küssel, E

Brückel, T

机构：

[1] Tech Univ Munich, ZWE FRM 2, D-85747 Garching, Germany

[2] Forschungszentrum Julich GmbH, Inst Festkorperforsch, D-52425 Julich, Germany

[3] TH Darmstadt, Inst Elect Mat, D-64287 Darmstadt, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 539卷 / 1-2期

关键词：

neutron detector; image plate; detector efficiency; pixelated detector;

D O I：

10.1016/j.nima.2004.10.002

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Recent experimental studies on new materials (storage phosphors and neutron converter) to be used in a low gamma-sensitive neutron image plate detector have been performed at the Research Center Julich and Darmstadt University of Technology. It was shown that a mixture LiF + KCl: Eu2+ (or KBr:Eu2+) features a higher neutron/gamma signal ratio compared to BaFBr:Eu2+ mixed with Gd as in commercially available neutron image plates. However, the smaller neutron capture cross-section of Li-6 in comparison with Gd requires the use of significantly thicker recording layers. This article presents the results of numerical estimations for the performance of such a detector. The use of image plates with a thick recording layer and a regular cell structure allowing for the increase in spatial resolution (pixelated image plate) is discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：236 / 249

页数：14

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