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A real-time statistical alarm method for mobile gamma spectrometry-Combining counts of pulses with spectral distribution of pulses

Kock, Peder LU ; Lanke, Jan LU and Samuelsson, Christer LU (2012) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 681. p.55-60
Abstract
A well-founded decision needs to take into account as much information from a sample as possible. In gamma spectrometry, the number of photons and their energy are the two quantities readily accessible to the physicist and both should be used in order to increase the power of a statistical test. While the problem of counts of pulses has been much studied the problem of spectral distribution of pulses has been generally overlooked. This work presents a statistical test combining tests on count rate and tests on spectral distribution. The proposed method is shown to have an acceptable false positive rate and, when compared with two other test statistics found in the literature, greater power. (C) 2012 Elsevier B.V. All rights reserved.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Gamma spectrometry, Hypothesis testing, Low counts, Multinomial, distribution
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
681
pages
55 - 60
publisher
Elsevier
external identifiers
  • wos:000305106000009
  • scopus:84860337127
ISSN
0167-5087
DOI
10.1016/j.nima.2012.04.038
language
English
LU publication?
yes
id
6ee759ac-e87c-4ef8-9f02-d02746d022e9 (old id 2891012)
date added to LUP
2012-07-30 11:38:47
date last changed
2017-08-27 04:52:08
@article{6ee759ac-e87c-4ef8-9f02-d02746d022e9,
  abstract     = {A well-founded decision needs to take into account as much information from a sample as possible. In gamma spectrometry, the number of photons and their energy are the two quantities readily accessible to the physicist and both should be used in order to increase the power of a statistical test. While the problem of counts of pulses has been much studied the problem of spectral distribution of pulses has been generally overlooked. This work presents a statistical test combining tests on count rate and tests on spectral distribution. The proposed method is shown to have an acceptable false positive rate and, when compared with two other test statistics found in the literature, greater power. (C) 2012 Elsevier B.V. All rights reserved.},
  author       = {Kock, Peder and Lanke, Jan and Samuelsson, Christer},
  issn         = {0167-5087},
  keyword      = {Gamma spectrometry,Hypothesis testing,Low counts,Multinomial,distribution},
  language     = {eng},
  pages        = {55--60},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {A real-time statistical alarm method for mobile gamma spectrometry-Combining counts of pulses with spectral distribution of pulses},
  url          = {http://dx.doi.org/10.1016/j.nima.2012.04.038},
  volume       = {681},
  year         = {2012},
}