Signal variance in gamma-ray detectors - A review

被引：161

作者：

Devanathan, R. ^{[1
]}

Corrales, L. R. ^{[1
]}

Gao, F. ^{[1
]}

Weber, W. J. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 565卷 / 02期

关键词：

gamma-ray spectroscopy; variance; Fano factor; resolution; semiconductor; scintillator;

D O I：

10.1016/j.nima.2006.05.085

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Signal variance in gamma-ray detector materials is reviewed with an emphasis on intrinsic variance. Phenomenological models of electron cascades are examined and the Fano factor (F) is discussed in detail. In semiconductors, F is much smaller than unity and charge carrier production is nearly proportional to energy. Based on a fit to a number of semiconductors and insulators, a new relationship between the average energy for electron-hole pair production and band gap energy is proposed. In scintillators, the resolution is governed mainly by photoelectron statistics and proportionality of light yield with respect to energy. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：637 / 649

页数：13

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