Benchmarking a surrogate reaction for neutron capture

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Benchmarking a surrogate reaction for neutron capture

R. Hatarik, L. A. Bernstein, J. A. Cizewski, D. L. Bleuel, J. T. Harke, J. E. Escher, J. Gibelin, B. L. Goldblum, A. M. Hatarik, S. R. Lesher, P. D. O’Malley, L. Phair, E. Rodriguez-Vieitez, T. Swan, and M. Wiedeking

Phys. Rev. C 81, 011602(R) – Published 19 January 2010

Abstract

${}^{171, 173}{Yb} (d, p γ)$ reactions are measured, with the goal of extracting the neutron capture cross-section ratio as a function of the neutron energy using the external surrogate ratio method. The cross-section ratios obtained are compared to the known neutron capture cross sections. Although the Weisskopf-Ewing limit is demonstrated not to apply for these low neutron energies, a prescription for deducing surrogate cross sections is presented. The surrogate cross-section ratios deduced from the ${}^{171, 173}{Yb} (d, p γ)$ measurements agree with the neutron capture results within 15%.

Received 11 December 2009

DOI:https://doi.org/10.1103/PhysRevC.81.011602

Authors & Affiliations

R. Hatarik^1,*, L. A. Bernstein², J. A. Cizewski¹, D. L. Bleuel², J. T. Harke², J. E. Escher², J. Gibelin³, B. L. Goldblum^3,4, A. M. Hatarik¹, S. R. Lesher², P. D. O’Malley¹, L. Phair³, E. Rodriguez-Vieitez³, T. Swan^1,5, and M. Wiedeking^2,3

¹Rutgers University, New Brunswick, New Jersey 08903, USA
²Lawrence Livermore National Laboratory, Livermore, California 94550, USA
³Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁴Nuclear Engineering Department, University of California, Berkeley, California 94720, USA
⁵University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom

^*rhatarik@lbl.gov; present address: Department of Chemistry, University of California, Berkeley, California 94720, USA.

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Vol. 81, Iss. 1 — January 2010

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Physical Review C

covering nuclear physics