Fast-Neutron Spectrometry Using a 3He Ionization Chamber and Digital Pulse Shape Analysis

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Digital pulse shape analysis (dPSA) has been used with a Cuttler-Shalev type 3He proportional counter to measure the fast neutron spectra of bare 252Cf and 241AmBe neutron sources. Measurements have also been made to determine the attenuated fast neutron spectra of 252Cf shielded by several materials including water, graphite, liquid nitrogen, magnesium, and tungsten. Rise-time dPSA has been employed using the common rise-time approach for analyzing n +3He ? 1H + 3H ionization events and a new approach has been developed to improve the fidelity of these measurements. Simulations have been performed for the different experimental arrangements and are compared, ... continued below

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Chichester, D. L.; Johnson, J. T. & Seabury, E. H. May 1, 2010.

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Digital pulse shape analysis (dPSA) has been used with a Cuttler-Shalev type 3He proportional counter to measure the fast neutron spectra of bare 252Cf and 241AmBe neutron sources. Measurements have also been made to determine the attenuated fast neutron spectra of 252Cf shielded by several materials including water, graphite, liquid nitrogen, magnesium, and tungsten. Rise-time dPSA has been employed using the common rise-time approach for analyzing n +3He ? 1H + 3H ionization events and a new approach has been developed to improve the fidelity of these measurements. Simulations have been performed for the different experimental arrangements and are compared, demonstrating general agreement between the dPSA processed fast neutron spectra and predictions.

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1457

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  • Journal Volume: 70; Journal Issue: 8; Conference: 2010 Symposium on Radiation Measurements and Applications,Ann Arbor, MI,05/24/2010,05/28/2010

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  • Report No.: INL/CON-10-18053
  • Grant Number: DE-AC07-05ID14517
  • DOI: 10.1016/j.apradiso.2011.12.045 | External Link
  • Office of Scientific & Technical Information Report Number: 984555
  • Archival Resource Key: ark:/67531/metadc1013291

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 1, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Nov. 3, 2017, 4:33 p.m.

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Chichester, D. L.; Johnson, J. T. & Seabury, E. H. Fast-Neutron Spectrometry Using a 3He Ionization Chamber and Digital Pulse Shape Analysis, article, May 1, 2010; Idaho. (digital.library.unt.edu/ark:/67531/metadc1013291/: accessed January 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.