Missing and Spurious Level Corrections for Nuclear Resonances

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Description

Neutron and proton resonances provide detailed level density information. However, due to experimental limitations, some levels are missed and some are assigned incorrect quantum numbers. The standard method to correct for missing levels uses the experimental widths and the Porter-Thomas distribution. Analysis of the spacing distribution provides an independent determination of the fraction of missing levels. We have derived a general expression for such an imperfect spacing distribution using the maximum entropy principle and applied it to a variety of nuclear resonance data. The problem of spurious levels has not been extensively addressed.

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7 p. (0.2 MB)

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Mitchell, G E; Agvaanluvsan, U; Pato, M P & Shriner, J F June 23, 2005.

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Neutron and proton resonances provide detailed level density information. However, due to experimental limitations, some levels are missed and some are assigned incorrect quantum numbers. The standard method to correct for missing levels uses the experimental widths and the Porter-Thomas distribution. Analysis of the spacing distribution provides an independent determination of the fraction of missing levels. We have derived a general expression for such an imperfect spacing distribution using the maximum entropy principle and applied it to a variety of nuclear resonance data. The problem of spurious levels has not been extensively addressed.

Physical Description

7 p. (0.2 MB)

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PDF-file: 7 pages; size: 0.2 Mbytes

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  • Presented at: International Conference in Contemporary Physics, Ulaanbaatar, Mongolia, Aug 08 - Aug 15, 2005

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  • Report No.: UCRL-PROC-213541
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 878631
  • Archival Resource Key: ark:/67531/metadc874260

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  • June 23, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • April 17, 2017, 12:53 p.m.

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Mitchell, G E; Agvaanluvsan, U; Pato, M P & Shriner, J F. Missing and Spurious Level Corrections for Nuclear Resonances, article, June 23, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc874260/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.