Detectors for on-line prompt gamma neutron activation analysis

被引：9
|
作者：
Proctor, R [1 ]
Yusuf, S [1 ]
Miller, J [1 ]
Scott, C [1 ]
机构：
[1] Gamma Metr, San Diego, CA 92121 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1999年 / 422卷 / 1-3期
关键词：
on-line prompt gamma neutron activation analysis; NaI detector; HPGe detector; BGO detector;
D O I：
10.1016/S0168-9002(98)01049-3
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The uncertainty of the elemental analysis is one of the major factors governing the utility of on-line prompt gamma neutron activation analysis (PGNAA) in the blending and sorting of bulk materials. In this paper, a method for quantifying the relative uncertainty from full spectrum analysis on complex materials is presented. The method was applied to three different detector types, NaI, HPGe, and EGO. The results show that the 5-10 times higher detection efficiency of a large size scintillation detector can often outweigh the resolution superiority of a HPGe detector for simple to medium complex bulk materials. The better detector resolution of sodium iodide gave a significantly lower analysis uncertainty than EGO for equal efficiency detectors. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：933 / 937
页数：5
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