New information on the characteristics of 1 in. x 1 in. cerium bromide scintillation detectors

被引：47
作者：
Billnert, R. [1 ,2 ]
Oberstedt, S. [1 ]
Andreotti, E. [1 ]
Hult, M. [1 ]
Marissens, G. [1 ]
Oberstedt, A. [2 ,3 ]
机构：
[1] European Commiss, DG JRC, Inst Reference Mat & Measurements, B-2440 Geel, Belgium
[2] Chalmers Tekniska Hgsk, S-41296 Gothenburg, Sweden
[3] Univ Orebro, Akad Nat Vetenskap Tekn, S-70182 Orebro, Sweden
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 647卷 / 01期
关键词：
Prompt fission gamma-rays; Cerium bromide; Lanthanum chloride; Scintillation detector; Energy resolution; Intrinsic activity; Timing resolution; NAI(TL) SCINTILLATORS; X-RAY; LACL3-CE; LABR3-CE;
D O I：
10.1016/j.nima.2011.05.034
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In view of highly demanded new and accurate data on prompt gamma-ray emission in nuclear fission a major part of investigations is directed towards the selection of suitable detector systems. Here we have studied a new type of crystal scintillation detectors made from cerium bromide (CeBr(3)). For the first time a full characterization of such a detector is presented in terms of energy resolution, pulse-height linearity, intrinsic activity and intrinsic timing resolution. In particular the latter one is very important for prompt fission gamma-ray studies, because the presence of fast neutrons, emitted in fission too, requires the time-of-flight method for their discrimination. The energy resolution has been found to be comparable to that of cerium-doped LaCl(3):Ce detectors at an efficiency comparable to the one of a LaBr(3):Ce detector of the same size. The intrinsic activity of the CeBr(3) crystal was observed to be much lower compared to lanthanum halide crystals. The intrinsic timing resolution of a coaxial 1 in. x 1 in. sized detector was measured relative to that of a previously characterized LaCl(3):Ce detector and found to be (326 +/- 7) Ps at (60)Co energies, which is in between those of a LaBr(3):Ce and a LaCl(3):Ce detector of same size. (C) 2011 Elsevier B.V. All rights reserved.
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页码：94 / 99
页数：6
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