A comparison of simple algorithms for gamma-ray spectrometers in radioactive source search applications

被引：34

作者：

Jarman, Kenneth D. ^{[1
]}

Runkle, Robert C. ^{[1
]}

Anderson, Kevin K. ^{[1
]}

Pfund, David M. ^{[1
]}

机构：

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

来源：

APPLIED RADIATION AND ISOTOPES | 2008年 / 66卷 / 03期

关键词：

nuclear measurements and monitoring techniques; homeland security; radioactive source search; gamma-ray spectral analysis; gamma-ray spectrometry;

D O I：

10.1016/j.apradiso.2007.09.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Large variation in ambient gamma-ray backgrounds challenges the search for radiation sources. Raising detection thresholds is a common response, but one that comes at the price of reduced detection sensitivity. In response to this challenge, we explore several tripwire detection algorithms for gamma-ray spectrometers. We assess their ability to mitigate background variation and find that the best-performing algorithms focus on the spectral shape over several energy bins using spectral comparison ratios and dynamically predict background with the Kalman Filter. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：362 / 371

页数：10

共 43 条

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