GRABGAM: A Gamma Analysis Code for Ultra-Low-Level HPGe SPECTRA

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The GRABGAM code has been developed for analysis of ultra-low-level HPGe gamma spectra. The code employs three different size filters for the peak search, where the largest filter provides best sensitivity for identifying low-level peaks and the smallest filter has the best resolution for distinguishing peaks within a multiplet. GRABGAM basically generates an integral probability F-function for each singlet or multiplet peak analysis, bypassing the usual peak fitting analysis for a differential f-function probability model. Because F is defined by the peak data, statistical limitations for peak fitting are avoided; however, the F-function does provide generic values for peak centroid, ... continued below

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Winn, W. G. July 28, 1999.

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  • Savannah River Site (S.C.)
    Publisher Info: Savannah River Site, Aiken, SC (United States)
    Place of Publication: Aiken, South Carolina

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The GRABGAM code has been developed for analysis of ultra-low-level HPGe gamma spectra. The code employs three different size filters for the peak search, where the largest filter provides best sensitivity for identifying low-level peaks and the smallest filter has the best resolution for distinguishing peaks within a multiplet. GRABGAM basically generates an integral probability F-function for each singlet or multiplet peak analysis, bypassing the usual peak fitting analysis for a differential f-function probability model. Because F is defined by the peak data, statistical limitations for peak fitting are avoided; however, the F-function does provide generic values for peak centroid, full width at half maximum, and tail that are consistent with a Gaussian formalism. GRABGAM has successfully analyzed over 10,000 customer samples, and it interfaces with a variety of supplementary codes for deriving detector efficiencies, backgrounds, and quality checks.

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INIS; OSTI as DE00009306

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  • Journal Name: Nuclear Instruments and Methods in Physics Research

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  • Report No.: WSRC-MS-99-00460
  • Grant Number: AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 9306
  • Archival Resource Key: ark:/67531/metadc794601

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • July 28, 1999

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  • Dec. 19, 2015, 7:14 p.m.

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  • Aug. 2, 2016, 1:22 p.m.

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Winn, W. G. GRABGAM: A Gamma Analysis Code for Ultra-Low-Level HPGe SPECTRA, article, July 28, 1999; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc794601/: accessed September 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.