The effect of energy resolution on the extraction of information content from gamma-ray spectra

The effect of energy resolution on the extraction of information content from gamma-ray spectra

Rapid unambiguous identification of illicit radioactive materials is a matter of international concern that has yet to be fully attained. This is particularly true for shielded fissile materials in the presence of background radiation and routinely encountered benign radionuclides. We present a syst...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-12, Vol.659 (1), p.207-214
Hauptverfasser: Nelson, Karl E., Gosnell, Thomas B., Knapp, David A.
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Background radiation
Counting
Detectors
Energy resolution
ENGINEERING
Fissile materials
Gamma-ray spectrometry
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
Nuclear fuels
Nuclear security
Radionuclide identification
Spectra
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Zusammenfassung:Rapid unambiguous identification of illicit radioactive materials is a matter of international concern that has yet to be fully attained. This is particularly true for shielded fissile materials in the presence of background radiation and routinely encountered benign radionuclides. We present a systematic treatment of the effect of detector resolution on the identification of nuclides in simple and complex shielded γ-ray spectra. Case studies of some problematic spectra with 1000 counts suggest that, at moderate count rates, near-unambiguous identification (
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2011.06.057