Neutron scattering differential cross sections for 23Na from 1.5 to 4.5 MeV

J. R. Vanhoy, S. F. Hicks, A. Chakraborty, B. R. Champine, B. M. Combs, B. P. Crider, L. J. Kersting, A. Kumar, C. J. Lueck, S. H. Liu, P. J. McDonough, M. T. McEllistrem, E. E. Peters, F. M. Prados-Estévez, L. C. Sidwell, A. J. Sigillito, D. W. Watts, S. W. Yates

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Measurements of neutron elastic and inelastic scattering cross sections from 23Na have been performed for sixteen incident neutron energies between 1.5 and 4.5 MeV. These measurements were complemented by γ-ray excitation functions using the (n, n'γ) reaction to include excited levels not resolved in the neutron detection measurements. The time-of-flight (TOF) technique was employed for background reduction in both neutron and γ-ray measurements and for energy determination in neutron detection measurements. Previous reaction model evaluations relied primarily on neutron total cross sections and four (n, n0) and (n, n1) angular distributions in the 5 to 9 MeV range. The inclusion of more inelastic channels and measurements at lower incident neutron energies provide additional information on direct couplings between elastic and inelastic scattering as a function of angular momentum transfer. Reaction model calculations examining collective direct-coupling and compound absorption components were performed.

Original languageEnglish
Pages (from-to)121-140
Number of pages20
JournalNuclear Physics A
Volume939
DOIs
StatePublished - Jul 1 2015

Bibliographical note

Funding Information:
Research at the University of Kentucky Accelerator Laboratory is supported by a contract from the U.S. Department of Energy Office of Science – Nuclear Energy Universities Program award NU-12-KY-UK-0201-05 , the U.S. National Science Foundation under grant PHY-1305801 , the USMA Nuclear Science and Engineering Research Center , the USNA James Kinnear Fellowship , and the Cowan Physics Fund at the University of Dallas . The authors also acknowledge the many contributions of H.E. Baber to these measurements.

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

  • ECIS06 calculations
  • Elastic and inelastic neutron scattering
  • Na(n, n') and (n, nγ) cross sections
  • Na(n, n)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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