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DEVELOPMENT OF AN ANTI-COMPTON SHIELD FOR A SI(LI) DETECTOR EMPLOYED IN PIXE ANALYSIS

被引：4
作者：
ELFMAN, M
HOMMAN, NPO
KRISTIANSSON, P
机构：
[1] LUND UNIV,DEPT NUCL PHYS,S-22362 LUND,SWEDEN
[2] LUND INST TECHNOL,S-22362 LUND,SWEDEN
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 95卷 / 01期
关键词：
D O I：
10.1016/0168-583X(94)00332-7
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The paper reports on the installation and operation of an anti-Compton shield inside the cryostat of a Si(Li) detector. The shield is used for the suppression of gamma-ray induced background in PIXE spectra. For the initial experiments presented, a plastic scintillator was employed as a shield. It was mounted behind the Si(Li) crystal, surrounding the cold finger. Initial tests showed a 6% suppression of the Compton background in the interval 6-32 keV of the PIXE spectrum, both for 662 keV gamma-rays from a Cs-137 source and for 122 keV gamma-rays from a Co-57 source. The details of the system and the potentials of the technique are presented and discussed.
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页码：122 / 126
页数：5
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