Thermal neutron multiplicity counting of samples with very low fission rates

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Description

When samples with very low fission rates are assayed using thermal neutron multiplicity counting, shift register electronics, and the moments formalism for the singles, doubles, and triples count rates, large counting statistics errors can occur in the triples rates because of cosmic ray events. These counting statistics errors can be greatly reduced using gate multiplicity analysis when cosmic ray events produce high multiplicity neutron bursts. The gate multiplicity analysis method, measurement data, and results are presented.

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14 p.

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Krick, M.S. November 1, 1997.

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Description

When samples with very low fission rates are assayed using thermal neutron multiplicity counting, shift register electronics, and the moments formalism for the singles, doubles, and triples count rates, large counting statistics errors can occur in the triples rates because of cosmic ray events. These counting statistics errors can be greatly reduced using gate multiplicity analysis when cosmic ray events produce high multiplicity neutron bursts. The gate multiplicity analysis method, measurement data, and results are presented.

Physical Description

14 p.

Notes

OSTI as DE98001039

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  • 38. annual meeting of the Institute of Nuclear Materials management, Phoenix, AZ (United States), 20-24 Jul 1997

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  • Other: DE98001039
  • Report No.: LA-UR--97-2649
  • Report No.: CONF-970744--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 548847
  • Archival Resource Key: ark:/67531/metadc690118

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  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 7:52 p.m.

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Krick, M.S. Thermal neutron multiplicity counting of samples with very low fission rates, article, November 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc690118/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.