NDLI: Application of the multiple isotope material basis set (MIMBS) method of isotope identification to low energy gamma emitters

Content Provider	Springer Nature Link
Author	Estep, Robert J. Mayo, Douglas R.
Copyright Year	2009
Abstract	The multiple isotope material basis set (MIMBS) method for isotope identification combines the material basis set (MBS) model of gamma spectrum attenuation with ordinary response function fitting to identify shielded gamma-emitting isotopes, using low and medium resolution gamma detectors such as NaI and LaBr$_{3}$. Although MIMBS has been shown to outperform conventional isotope identification algorithms that do not correct for attenuation effects, it has difficulty identifying low energy emitters such as $^{57}$Co or $^{241}$Am. In this article we examine the use of optimized multiple attenuator thicknesses in generating basis spectra for each isotope to obtain better modeling of the low energy spectrum while simultaneously extending the range of the model to thicker attenuators. The effectiveness of the multiple thickness MIMBS algorithm in improving isotope identification rates compared with the original MIMBS method is demonstrated with analyses of simulated gamma spectra. The identification rates obtained with the MIMBS methods are compared to those obtained using the commercial peak-based ScintiVision NaI analysis software.
Starting Page	877
Ending Page	881
Page Count	5
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	282
Issue Number	3
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-07-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Isotope identification Gamma-ray spectroscopy Response function Gamma-ray attenuation Inorganic Chemistry Diagnostic Radiology Nuclear Physics, Heavy Ions, Hadrons Physical Chemistry Nuclear Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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