Accurate U238 ( n, 2n ) U237 reaction cross-section measurements from 6.5 to 14.8 MeV

Krishichayan, .; Bhike, M.; Tornow, W.; Tonchev, A. P.; Kawano, T.

doi:10.1103/PhysRevC.96.044623

Title: Accurate ${}^{238}U$ ( $n, 2 n$ ) ${}^{237}U$ reaction cross-section measurements from 6.5 to 14.8 MeV

Journal Article · Thu Oct 26 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.044623· OSTI ID:1466152

Krishichayan, . ^[1]; Bhike, M. ^[1]; Tornow, W. ^[1]; Tonchev, A. P. ^[2]; Kawano, T. ^[3]

Duke Univ., Durham, NC (United States). Department of Physics; Triangle Universities Nuclear Laboratory, Durham, NC (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

In this study, the cross section for the ²³⁸U(n,2n)²³⁷U reaction has been measured in the incident neutron energy range from 6.5 to 14.8 MeV in small energy steps using an activation technique. Monoenergetic neutron beams were produced via the ²H( d,n ) ³He and ³H ( d,n ) ⁴He reactions. ²³⁸U targets were activated along with Au and Al monitor foils to determine the incident neutron flux. The activity of the reaction products was measured in TUNL's low-background counting facility using high-resolution γ-ray spectroscopy. The results are compared with previous measurements and latest data evaluations. Statistical-model calculations, based on the Hauser-Feshbach formalism, have been carried out using the CoH₃ code and are compared with the experimental results. Finally, the present self-consistent and high-quality data are important for stockpile stewardship and nuclear forensic purposes as well as for the design and operation of fast reactors.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC52-07NA27344; NA0002936; FG02-97ER41033; AC52-06NA25396

OSTI ID:: 1466152

Alternate ID(s):: OSTI ID: 1405045

Report Number(s):: LLNL-JRNL-740996; 895346

Journal Information:: Physical Review C, Vol. 96, Issue 4; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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