Neutron elastic and inelastic scattering differential cross sections on carbon

Ramirez, A. P.D.; Peters, E. E.; Vanhoy, J. R.; Hicks, S. F.; Alasagas, L. A.; Alcorn-Dominguez, D. K.; Block, S. T.; Byrd, S. T.; Chouinard, E. A.; Combs, B. M.; Crider, B. P.; Derdyn, E. C.; Downes, L.; Erlanson, J. A.; Evans, S. E.; French, A. J.; Garza, E. A.; Girgis, J.; Harrison, T. D.; Henderson, S. L.; Howard, T. J.; Jackson, D. T.; Kersting, L. J.; Kumar, A.; Liu, S. H.; Lueck, C. J.; Lyons, E. M.; McDonough, P. J.; McEllistrem, M. T.; Morin, T. J.; Mukhopadhyay, S.; Nguyen, T. A.; Nickel, M.; Nigam, S.; Pecha, R. L.; Potter, J.; Prados-Estévez, F. M.; Rice, B. G.; Ross, T. J.; Santonil, Z. C.; Schneiderjan, J.; Sidwell, L. C.; Sigillito, A. J.; Steves, J. L.; Thompson, B. K.; Watts, D. W.; Xiao, Y.; Yates, S. W.

doi:10.1016/j.nuclphysa.2022.122446

Neutron elastic and inelastic scattering differential cross sections on carbon

Journal Article · Fri Jul 01 00:00:00 EDT 2022 · Nuclear Physics. A

DOI:https://doi.org/10.1016/j.nuclphysa.2022.122446· OSTI ID:1864689

Ramirez, A. P.D. ^[1]; Peters, E. E. ^[2]; ^[3]; ^[4]; Alasagas, L. A. ^[3]; Alcorn-Dominguez, D. K. ^[3]; Block, S. T. ^[5]; Byrd, S. T. ^[5]; Chouinard, E. A. ^[5]; Combs, B. M. ^[5]; ^[2]; Derdyn, E. C. ^[5]; Downes, L. ^[5]; Erlanson, J. A. ^[3]; Evans, S. E. ^[5]; French, A. J. ^[5]; Garza, E. A. ^[3]; Girgis, J. ^[5]; Harrison, T. D. ^[5]; Henderson, S. L. ^[5] more »

Univ. of Kentucky, Lexington, KY (United States); United States Naval Academy
Univ. of Kentucky, Lexington, KY (United States)
US Naval Academy, Annapolis, MD (United States)
Univ. of Dallas, Irving, TX (United States); Univ. of Kentucky, Lexington, KY (United States)
Univ. of Dallas, Irving, TX (United States)

Elastic and inelastic neutron scattering angular distributions were measured on natural carbon samples to confirm existing experimental data and evaluations in the fast neutron region and to guide improvements in resonance parameters, where needed. Sixty-four (n,n') differential cross section measurements were performed at 45 incident neutron energies between 0.5 and 8.0 MeV. Experimental angle-integrated elastic scattering cross sections are consistent with ENDF/B-VIII.0 values with the exception of the region from 3.2 to 4.0 MeV where our results are ~3% higher. In the 3.4 to 3.6 MeV region our differential cross sections are slightly lower at forward angles and somewhat higher at backward angles than the ENDF/B-VIII.0 calculations; however, our results are consistent with measured data from other research groups. The first- through fourth-order elastic scattering Legendre coefficients from fits to these experimental data are consistent with ENDF/B-VIII.0 values across this range of incident neutron energies. Inelastic scattering cross sections were measured at 12 incident neutron energies between 5.6 and 7.8 MeV. Angle-integrated cross sections agree well with the 1978 Perey and ENDF/B-VIII.0 values; however, the angular-distribution shapes deviate somewhat from the ENDF/B-VIII.0 calculations. These data will allow refinement of the resonance parameter description in this difficult energy region.

View Accepted Manuscript (DOE)

Research Organization:: US Naval Academy, Annapolis, MD (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89243020SSC000056

OSTI ID:: 1864689

Journal Information:: Nuclear Physics. A, Journal Name: Nuclear Physics. A Vol. 1023; ISSN 0375-9474

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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