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Title: Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α) 56Fe at fast-neutron energies from 500 keV to 10 MeV

Abstract

We report nuclear reaction data for neutron induced reactions on unstable nuclei are critical for a wide range of applications spanning studies of nuclear astrophysics, nuclear reactor designs, and radiochemistry diagnostics. However, nuclear data evaluations of the reaction cross sections are largely based on calculations due to the difficulty in performing this class of measurements and the resulting lack of experimental data. For neutron induced charged particle reactions at fast neutron energies, at the MeV scale, these cross section predictions are predominately driven by statistical Hauser-Feshbach calculations. In this work, we present partial and total 59Ni(n, p) and 59Ni(n, α) cross sections, measured directly with a radioactive 59Ni target, and compare the results to the present nuclear data evaluations. In addition, the results from this work are compared to a recent study of the 59Ni(n, xp) reaction cross section that was performed via an indirect surrogate ratio method. The expected energy trend of the cross section, based on the current work, is inconsistent with that of the surrogate work. This calls into question the reliability of that application of the surrogate ratio method and highlights the need for direct measurements on unstable nuclei, when feasible.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Central Michigan Univ., Mount Pleasant, MI (United States)
  3. Korean Atomic Energy Reseach Institute, Daejeon (Korea, Republic of)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; Korean Atomic Energy Research Institute (KAERI)
OSTI Identifier:
1866958
Report Number(s):
LA-UR-21-25101
Journal ID: ISSN 2469-9985; TRN: US2306116
Grant/Contract Number:  
89233218CNA000001; NRF-2020M2A8A1000930
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C
Additional Journal Information:
Journal Volume: 105; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; models; methods for nuclear reactions; neutron physics; nuclear reactions; nucleon induced nuclear reactions

Citation Formats

Kuvin, Sean Andrew, Lee, Hye Young, Birnbaum, Eva R., DiGiovine, Brad Joseph, Eiroa Lledo, Cecilia, Georgiadou, Anastasia, Herman, Michal W., Kawano, Toshihiko, Mocko, Veronika, Mosby, Shea Morgan, Vermeulen, Christiaan, Votaw, Daniel Gregory Jenks, Zavorka, Lukas, Perdikakis, Georgios, Tsintari, Pelagia, and Kim, Hyeong-il. Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α) 56Fe at fast-neutron energies from 500 keV to 10 MeV. United States: N. p., 2022. Web. doi:10.1103/physrevc.105.044608.
Kuvin, Sean Andrew, Lee, Hye Young, Birnbaum, Eva R., DiGiovine, Brad Joseph, Eiroa Lledo, Cecilia, Georgiadou, Anastasia, Herman, Michal W., Kawano, Toshihiko, Mocko, Veronika, Mosby, Shea Morgan, Vermeulen, Christiaan, Votaw, Daniel Gregory Jenks, Zavorka, Lukas, Perdikakis, Georgios, Tsintari, Pelagia, & Kim, Hyeong-il. Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α) 56Fe at fast-neutron energies from 500 keV to 10 MeV. United States. https://doi.org/10.1103/physrevc.105.044608
Kuvin, Sean Andrew, Lee, Hye Young, Birnbaum, Eva R., DiGiovine, Brad Joseph, Eiroa Lledo, Cecilia, Georgiadou, Anastasia, Herman, Michal W., Kawano, Toshihiko, Mocko, Veronika, Mosby, Shea Morgan, Vermeulen, Christiaan, Votaw, Daniel Gregory Jenks, Zavorka, Lukas, Perdikakis, Georgios, Tsintari, Pelagia, and Kim, Hyeong-il. Mon . "Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α) 56Fe at fast-neutron energies from 500 keV to 10 MeV". United States. https://doi.org/10.1103/physrevc.105.044608. https://www.osti.gov/servlets/purl/1866958.
@article{osti_1866958,
title = {Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α) 56Fe at fast-neutron energies from 500 keV to 10 MeV},
author = {Kuvin, Sean Andrew and Lee, Hye Young and Birnbaum, Eva R. and DiGiovine, Brad Joseph and Eiroa Lledo, Cecilia and Georgiadou, Anastasia and Herman, Michal W. and Kawano, Toshihiko and Mocko, Veronika and Mosby, Shea Morgan and Vermeulen, Christiaan and Votaw, Daniel Gregory Jenks and Zavorka, Lukas and Perdikakis, Georgios and Tsintari, Pelagia and Kim, Hyeong-il},
abstractNote = {We report nuclear reaction data for neutron induced reactions on unstable nuclei are critical for a wide range of applications spanning studies of nuclear astrophysics, nuclear reactor designs, and radiochemistry diagnostics. However, nuclear data evaluations of the reaction cross sections are largely based on calculations due to the difficulty in performing this class of measurements and the resulting lack of experimental data. For neutron induced charged particle reactions at fast neutron energies, at the MeV scale, these cross section predictions are predominately driven by statistical Hauser-Feshbach calculations. In this work, we present partial and total 59Ni(n, p) and 59Ni(n, α) cross sections, measured directly with a radioactive 59Ni target, and compare the results to the present nuclear data evaluations. In addition, the results from this work are compared to a recent study of the 59Ni(n, xp) reaction cross section that was performed via an indirect surrogate ratio method. The expected energy trend of the cross section, based on the current work, is inconsistent with that of the surrogate work. This calls into question the reliability of that application of the surrogate ratio method and highlights the need for direct measurements on unstable nuclei, when feasible.},
doi = {10.1103/physrevc.105.044608},
journal = {Physical Review. C},
number = 4,
volume = 105,
place = {United States},
year = {Mon Apr 11 00:00:00 EDT 2022},
month = {Mon Apr 11 00:00:00 EDT 2022}
}

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