Inspection of 56Fe γ -Ray angular distributions as a function of incident neutron energy using optical model approaches

J. R. Vanhoy, A. P. Ramirez, D. K. Alcorn-Dominguez, S. F. Hicks, E. E. Peters, M. T. McEllistrem, S. Mukhopadhyay, S. W. Yates

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Neutron inelastic scattering cross sections measured directly through (n,n) or deduced from γ-ray production cross sections following inelastic neutron scattering (n,nγ) are a focus of basic and applied research at the University of Kentucky Accelerator Laboratory (www.pa.uky.edu/accelerator). For nuclear data applications, angle-integrated cross sections are desired over a wide range of fast neutron energies. Several days of experimental beam time are required for a data set at each incident neutron energy, which limits the number of angular distributions that can be measured in a reasonable amount of time. Approximations can be employed to generate cross sections with a higher energy resolution, since at 125o, the a2P2 term of the Legendre expansion is identically zero and the a4P4 is assumed to be very small. Provided this assumption is true, a single measurement at 125o would produce the γ-ray production cross section. This project tests these assumptions and energy dependences using the codes CINDY/SCAT and TALYS/ECIS06/SCAT. It is found that care must be taken when interpreting γ-ray excitation functions as cross sections when the incident neutron energy is < 1000 keV above threshold or before the onset of feeding.

Original languageEnglish
Title of host publicationND 2016
Subtitle of host publicationInternational Conference on Nuclear Data for Science and Technology
EditorsPeter Siegler, Wim Mondelaers, Arjan Plompen, Franz-Josef Hambsch, Peter Schillebeeckx, Stefan Kopecky, Jan Heyse, Stephan Oberstedt
ISBN (Electronic)9782759890200
DOIs
StatePublished - Sep 13 2017
Event2016 International Conference on Nuclear Data for Science and Technology, ND 2016 - Bruges, Belgium
Duration: Sep 11 2016Sep 16 2016

Publication series

NameEPJ Web of Conferences
Volume146
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference2016 International Conference on Nuclear Data for Science and Technology, ND 2016
Country/TerritoryBelgium
CityBruges
Period9/11/169/16/16

Bibliographical note

Publisher Copyright:
© The Authors, published by EDP Sciences, 2017.

ASJC Scopus subject areas

  • General Physics and Astronomy

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