Performance of a Ge-BGO Compton-suppression spectrometer and its application to photon activation analysis

被引：5
|
作者：
Fukuda, K [1 ]
Ohkuma, J [1 ]
Asano, T [1 ]
Satoh, Y [1 ]
机构：
[1] OSAKA UNIV, INST SCI & IND RES, OSAKA 567, JAPAN
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1996年 / 114卷 / 3-4期
基金：
日本科学技术振兴机构;
关键词：
D O I：
10.1016/0168-583X(96)00206-6
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A Compton-suppression spectrometer, consisting of a pure Ge detector and EGO shield detectors is described. A cylindrical symmetry type of the shield detector configuration, with the Ge detector inserted on the symmetry axis, has been designed. The Compton-suppression factor is 6.0 for the photopeak of Co-60 at 1332.5 keV. The peak-to-Compton ratio for the peak is 42:1 when the BGO detectors are used as a passive shield only, and is 250:1 in the suppression mode. Photon activation analysis with this detector has been made for the determination of trace elements in a bulk dysprosium sample. The signal-to-noise ratio for detecting trace elements in the sample has been improved by a factor from 1.3 to 3.1 by Compton suppression compared with that obtained in the non-suppression mode.
引用
收藏
页码：379 / 386
页数：8
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