Spin and parity assignments for Mo94,95 neutron resonances

S. A. Sheets, U. Agvaanluvsan, J. A. Becker, F. Bečvář, T. A. Bredeweg, R. C. Haight, M. Krtička, M. Jandel, G. E. Mitchell, J. M. O'Donnell, W. E. Parker, R. Reifarth, R. S. Rundberg, E. I. Sharapov, I. Tomandl, J. L. Ullmann, D. J. Vieira, J. M. Wouters, J. B. Wilhelmy, and C. Y. Wu
Phys. Rev. C 76, 064317 – Published 28 December 2007

Abstract

The γ rays following the Mo94,95(n,γ) reactions were measured as a function of incident neutron energy by the time-of-flight method with the DANCE (Detector for Advanced Neutron Capture Experiments) array of 160 BaF2 scintillation detectors at the Los Alamos Neutron Science Center. The targets were enriched samples: 91.59% Mo94 and 96.47% Mo95. The γ-ray multiplicities and energy spectra for different multiplicities were measured in s- and p-wave resonances up to En=10 keV for Mo94 and up to En=2 keV for Mo95. Definite spins and parities were assigned in Mo96 for about 60% of the resonances, and tentative spins and parities were assigned for the remaining resonances. In Mo95 the parities were determined for the observed resonances, confirming previously known assignments.

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  • Received 17 October 2007

DOI:https://doi.org/10.1103/PhysRevC.76.064317

©2007 American Physical Society

Authors & Affiliations

S. A. Sheets1,2, U. Agvaanluvsan2, J. A. Becker2, F. Bečvář3, T. A. Bredeweg4, R. C. Haight4, M. Krtička3, M. Jandel4, G. E. Mitchell1,*, J. M. O'Donnell4, W. E. Parker2, R. Reifarth4, R. S. Rundberg4, E. I. Sharapov5, I. Tomandl6, J. L. Ullmann4, D. J. Vieira4, J. M. Wouters4, J. B. Wilhelmy4, and C. Y. Wu2

  • 1North Carolina State University, Raleigh, North Carolina 27695, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
  • 2Lawrence Livermore National Laboratory, Livermore, California 94550, USA
  • 3Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, CZ-180 00 Prague 8, Czech Republic
  • 4Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 5Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
  • 6Nuclear Physics Institute, Czech Academy of Sciences, CZ-250 68 Řež, Czech Republic

  • *mitchell@tunl.duke.edu

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Vol. 76, Iss. 6 — December 2007

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