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

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor: 55-60
Publikation/Tidskrift/Serie: Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Volym: 681
Dokumenttyp: Artikel
Förlag: Elsevier Science BV

Sammanfattning

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.

Disputation

Nyckelord

  • Mathematics and Statistics
  • Gamma spectrometry
  • Hypothesis testing
  • Low counts
  • Multinomial
  • distribution

Övriga

Published
Yes
  • ISSN: 0168-9002

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