Intrinsic energy resolution of pure NaI studied with large area avalanche photodiodes at liquid nitrogen temperatures

被引：37
作者：
Moszynski, M [1 ]
Czarnacki, W
Klamra, W
Szawlowski, M
Schotanus, P
Kapusta, M
机构：
[1] Soltan Inst Nucl Studies, Dept Nucl Elect, PL-05400 Otwock, Poland
[2] Royal Inst Technol, SCFAB, S-10691 Stockholm, Sweden
[3] Adv Photonix Inc, Camarillo, CA 93012 USA
[4] SCIONIX Holland BV, NL-3980 CC Bunnik, Netherlands
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2003年 / 505卷 / 1-2期
关键词：
scintillators; pure NaI; energy resolution; intrinsic resolution; non-proportinality of light yield; avalanche photodiodes;
D O I：
10.1016/S0168-9002(03)01021-0
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The energy resolution and non-proportionality of the light yield vs gamma-ray energy of pure NaI scintillators directly coupled to Large Area Avalanche Photodiodes (LAAPDs) and cooled down to the liquid nitrogen temperatures have been studied. Large improvements of energy resolution and nearly proportional light yield response have been obtained at very long shaping time constants. Energy resolution of 3.8+/-0.1% for 662 keV gamma-rays from a Cs-137 source was recorded at 50 mus integration time. The intrinsic resolution of the crystal vs energy of gamma-rays has been estimated by measurements of the number of primary electron-hole pairs generated in LAAPD by scintillation light. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：63 / 67
页数：5
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