Extracting (n,gamma) direct capture cross sections from Coulomb dissociation: application to 14C(n,gamma)15C

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A methodology for extracting neutron direct capture rates from Coulomb Dissociation data is developed and applied to the Coulomb dissociation of {sup 15}C on {sup 208}Pb at 68 MeV/nucleon. Full Continuum Discretized Coupled Channel calculations are performed and an asymptotic normalization coefficient is determined from a fit to the breakup data. Direct neutron capture calculations using the extracted asymptotic normalization coefficient provide (n, {gamma}) cross sections consistent with direct measurements. Our results show that the Coulomb Dissociation data can be reliably used for extracting the cross section for {sup 14}C(n,{gamma}){sup 15}C if the appropriate reaction theory is used. The resulting ... continued below

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7 p. (0.1 MB)

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Summers, N C & Nunes, F M January 22, 2008.

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A methodology for extracting neutron direct capture rates from Coulomb Dissociation data is developed and applied to the Coulomb dissociation of {sup 15}C on {sup 208}Pb at 68 MeV/nucleon. Full Continuum Discretized Coupled Channel calculations are performed and an asymptotic normalization coefficient is determined from a fit to the breakup data. Direct neutron capture calculations using the extracted asymptotic normalization coefficient provide (n, {gamma}) cross sections consistent with direct measurements. Our results show that the Coulomb Dissociation data can be reliably used for extracting the cross section for {sup 14}C(n,{gamma}){sup 15}C if the appropriate reaction theory is used. The resulting error bars are of comparable magnitude to those from the direct measurement.

Physical Description

7 p. (0.1 MB)

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PDF-file: 7 pages; size: 0.1 Mbytes

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  • Journal Name: Physical Review C, vol. 78, no. 1, July 3, 2008, pp. 011601(R); Journal Volume: 78; Journal Issue: 1

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  • Report No.: LLNL-JRNL-401704
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 944286
  • Archival Resource Key: ark:/67531/metadc902006

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  • January 22, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • April 17, 2017, 12:44 p.m.

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Summers, N C & Nunes, F M. Extracting (n,gamma) direct capture cross sections from Coulomb dissociation: application to 14C(n,gamma)15C, article, January 22, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc902006/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.