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Title: 54Fe neutron elastic and inelastic scattering differential cross sections from 2–6 MeV

Abstract

Measurements of neutron elastic and inelastic scattering cross sections from 54Fe were performed for nine incident neutron energies between 2 and 6 MeV. Measured differential scattering cross sections are compared to those from previous measurements and the ENDF, JENDL, and JEFF data evaluations. TALYS calculations were performed and modifications of the default parameters are found to better describe the experimental cross sections. A spherical optical model treatment is generally adequate to describe the cross sections in this energy region; however, in 54Fe the direct coupling is found to increase suddenly above 4 MeV and requires an increase in the DWBA deformation parameter by approximately 25%. Furthermore, this has little effect on the elastic scattering differential cross sections but makes a significant improvement in both the strength and shape of the inelastic scattering angular distribution, which are found to be very sensitive to the size and extent of the surface absorption region.

Authors:
ORCiD logo [1];  [2];  [3];  [3];  [2];  [3];  [1];  [1];  [3];  [3];  [2];  [2];  [3];  [2];  [2];  [2];  [1];  [2];  [3];  [3] more »;  [1];  [1];  [4] « less
  1. United States Naval Academy, Annapolis, MD (United States)
  2. Univ. of Kentucky, Lexington, KY (United States)
  3. Univ. of Dallas, Irving, TX (United States)
  4. Univ. of Kentucky, Lexington, KY (United States); Univ. of Dallas, Irving, TX (United States)
Publication Date:
Research Org.:
Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1489636
Alternate Identifier(s):
OSTI ID: 1496285
Grant/Contract Number:  
NA0002931; NU-12-KY-UK-0201-05
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
Journal Volume: 972; Journal Issue: C; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Neutron elastic and inelastic scattering; Differential cross sections; Coupled Channels; TALYS; ECIS06

Citation Formats

Vanhoy, J. R., Liu, S. H., Hicks, S. F., Combs, B. M., Crider, B. P., French, A. J., Garza, E. A., Harrison, T., Henderson, S. L., Howard, T. J., McEllistrem, M. T., Nigam, S., Pecha, R. L., Peters, E. E., Prados-Estévez, F. M., Ramirez, A. P. D., Rice, B. G., Ross, T. J., Santonil, Z. C., Sidwell, L. C., Steves, J. L., Thompson, B. K., and Yates, S. W. 54Fe neutron elastic and inelastic scattering differential cross sections from 2–6 MeV. United States: N. p., 2018. Web. doi:10.1016/j.nuclphysa.2018.02.004.
Vanhoy, J. R., Liu, S. H., Hicks, S. F., Combs, B. M., Crider, B. P., French, A. J., Garza, E. A., Harrison, T., Henderson, S. L., Howard, T. J., McEllistrem, M. T., Nigam, S., Pecha, R. L., Peters, E. E., Prados-Estévez, F. M., Ramirez, A. P. D., Rice, B. G., Ross, T. J., Santonil, Z. C., Sidwell, L. C., Steves, J. L., Thompson, B. K., & Yates, S. W. 54Fe neutron elastic and inelastic scattering differential cross sections from 2–6 MeV. United States. doi:10.1016/j.nuclphysa.2018.02.004.
Vanhoy, J. R., Liu, S. H., Hicks, S. F., Combs, B. M., Crider, B. P., French, A. J., Garza, E. A., Harrison, T., Henderson, S. L., Howard, T. J., McEllistrem, M. T., Nigam, S., Pecha, R. L., Peters, E. E., Prados-Estévez, F. M., Ramirez, A. P. D., Rice, B. G., Ross, T. J., Santonil, Z. C., Sidwell, L. C., Steves, J. L., Thompson, B. K., and Yates, S. W. Fri . "54Fe neutron elastic and inelastic scattering differential cross sections from 2–6 MeV". United States. doi:10.1016/j.nuclphysa.2018.02.004. https://www.osti.gov/servlets/purl/1489636.
@article{osti_1489636,
title = {54Fe neutron elastic and inelastic scattering differential cross sections from 2–6 MeV},
author = {Vanhoy, J. R. and Liu, S. H. and Hicks, S. F. and Combs, B. M. and Crider, B. P. and French, A. J. and Garza, E. A. and Harrison, T. and Henderson, S. L. and Howard, T. J. and McEllistrem, M. T. and Nigam, S. and Pecha, R. L. and Peters, E. E. and Prados-Estévez, F. M. and Ramirez, A. P. D. and Rice, B. G. and Ross, T. J. and Santonil, Z. C. and Sidwell, L. C. and Steves, J. L. and Thompson, B. K. and Yates, S. W.},
abstractNote = {Measurements of neutron elastic and inelastic scattering cross sections from 54Fe were performed for nine incident neutron energies between 2 and 6 MeV. Measured differential scattering cross sections are compared to those from previous measurements and the ENDF, JENDL, and JEFF data evaluations. TALYS calculations were performed and modifications of the default parameters are found to better describe the experimental cross sections. A spherical optical model treatment is generally adequate to describe the cross sections in this energy region; however, in 54Fe the direct coupling is found to increase suddenly above 4 MeV and requires an increase in the DWBA deformation parameter by approximately 25%. Furthermore, this has little effect on the elastic scattering differential cross sections but makes a significant improvement in both the strength and shape of the inelastic scattering angular distribution, which are found to be very sensitive to the size and extent of the surface absorption region.},
doi = {10.1016/j.nuclphysa.2018.02.004},
journal = {Nuclear Physics. A},
number = C,
volume = 972,
place = {United States},
year = {2018},
month = {2}
}

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