COINCIDENCE SUMMING IN GAMMA-RAY SPECTROSCOPY

被引：93

作者：

SEMKOW, TM ^{[1
]}

MEHMOOD, G ^{[1
]}

PAREKH, PP ^{[1
]}

VIRGIL, M ^{[1
]}

机构：

[1] SUNY ALBANY,SCH PUBL HLTH,ALBANY,NY 12201

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1990年 / 290卷 / 2-3期

关键词：

D O I：

10.1016/0168-9002(90)90561-J

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new technique has been developed to calculate coincidence-summing corrections in γ-ray spectroscopy. In this technique the general coincidence-summing equations were derived in matrix notation, which allowed extracting either the first-order correction (combinations of only two coincident γ-rays) or a full correction (all possible combinations of emitted γ-rays). Subsequently, it is shown how the technique can be applied to the determination of the source disintegration rate, γ-ray emission rates or peak efficiencies in the presence of coincidence summing. In particular, the technique has been applied to the determination of peak efficiencies of a germanium detector. The peak efficiencies were iterated self-consistently using the coincidence-summing equations. The above calculation showed that, in general, the full correction is necessary for complicated decay schemes. In addition, a method has been developed to determine the peak-to-total ratio for a germanium detector in the presence of an interfering γ-ray. © 1990.

引用

页码：437 / 444

页数：8

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