Investigation of the properties of a 1" x 1" LaBr3:Ce scintillator

被引：110
作者：
Nicolini, R.
Camera, F.
Blasi, N.
Brambilla, S.
Bassini, R.
Boiano, C.
Bracco, A.
Crespi, F. C. L.
Wieland, O.
Benzoni, G.
Leoni, S.
Million, B.
Montanari, D.
Zalite, A.
机构：
[1] Univ Milan, I-20133 Milan, Italy
[2] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 582卷 / 02期
关键词：
LaBr3; scintillators; lanthanum halide; gamma spectroscopy; gamma detectors; self-activity; simulations;
D O I：
10.1016/j.nima.2007.08.221
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The properties of a cylindrical 1 '' x 1 '' LaBr3:Ce scintillator (Brillance 380) were investigated. The energy resolution at gamma-ray energy of 662keV was measured to be smaller than 3% and the intrinsic time resolution was found to be approximate to 230ps. Two different aspects were investigated. The first is the detailed study of the crystal self-activity, emitting a and P particles and gamma-rays, by measuring coincidences with gamma-rays in HPGe, BGO and BaF2 detectors. In particular, the coincidence with an HPGe detector allowed to isolate clearly the different contributions from Ac-227 (chemical homologue of lanthanum) and its daughter nuclei down to the stable Pb-207. The second aspect is the determination of the efficiency for gamma-ray detection, measured at 1 MeV and simulated using GEANT4 up to 15 MeV as a function of the detector size. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：554 / 561
页数：8
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