Estimation of obliquely scattered gamma-ray response functions in the gross-count tomographic gamma scanner (GC-TGS) Method

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The gross-count tomographic gamma scanner (GC-TGS) method for assaying transuranic waste in 208-1 drums is being developed to allow NaI and other low-resolution gamma-ray detectors to be used in place of high-purity germanium (HPGe) detectors in TGS systems. It was recently shown that a logarithmic response-function technique based on the material basis set (MBS) formalism used in the TGS method allows gross spectra from NaI detectors to be used in both measuring MBS transmission corrections using external transmission sources and in applying the corrections to emission spectra to arrive at radionuclide mass estimates. In this work the authors have attempted ... continued below

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8 p.

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Rawool-Sullivan, M.W.; Estep, R.J. & Miko, D. November 1, 1997.

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Description

The gross-count tomographic gamma scanner (GC-TGS) method for assaying transuranic waste in 208-1 drums is being developed to allow NaI and other low-resolution gamma-ray detectors to be used in place of high-purity germanium (HPGe) detectors in TGS systems. It was recently shown that a logarithmic response-function technique based on the material basis set (MBS) formalism used in the TGS method allows gross spectra from NaI detectors to be used in both measuring MBS transmission corrections using external transmission sources and in applying the corrections to emission spectra to arrive at radionuclide mass estimates. In this work the authors have attempted to show that addition of the oblique scatter component can increase the accuracy of the GC-TGS measurements with both NaI and high-purity germanium detectors. This paper describes the formalism behind the GC-TGS method and the improvement achieved in the analysis by including the scatter component.

Physical Description

8 p.

Notes

INIS; OSTI as DE98003420

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  • Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Albuquerque, NM (United States), 11-13 Nov 1997

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  • Other: DE98003420
  • Report No.: LA-UR--97-4735
  • Report No.: CONF-971147--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 645541
  • Archival Resource Key: ark:/67531/metadc697697

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Office of Scientific & Technical Information Technical Reports

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

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  • November 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 21, 2016, 9:47 p.m.

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Rawool-Sullivan, M.W.; Estep, R.J. & Miko, D. Estimation of obliquely scattered gamma-ray response functions in the gross-count tomographic gamma scanner (GC-TGS) Method, article, November 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc697697/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.