Test of the statistical model in Mo96 with the BaF2γ calorimeter DANCE array

S. A. Sheets, U. Agvaanluvsan, J. A. Becker, F. Bečvář, T. A. Bredeweg, R. C. Haight, M. Jandel, M. Krtička, G. E. Mitchell, J. M. O'Donnell, W. Parker, R. Reifarth, R. S. Rundberg, E. I. Sharapov, J. L. Ullmann, D. J. Vieira, J. B. Wilhelmy, J. M. Wouters, and C. Y. Wu
Phys. Rev. C 79, 024301 – Published 3 February 2009

Abstract

The γ-ray cascades following the Mo95(n,γ)Mo96 reaction were studied with the γ calorimeter DANCE (Detector for Advanced Neutron Capture Experiments) consisting of 160 BaF2 scintillation detectors at the Los Alamos Neutron Science Center. The γ-ray energy spectra for different multiplicities were measured for s- and p-wave resonances below 2 keV. The shapes of these spectra were found to be in very good agreement with simulations using the DICEBOX statistical model code. The relevant model parameters used for the level density and photon strength functions were identical with those that provided the best fit of the data from a recent measurement of the thermal Mo95(n,γ)Mo96 reaction with the two-step-cascade method. The reported results strongly suggest that the extreme statistical model works very well in the mass region near A=100.

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  • Received 29 August 2008

DOI:https://doi.org/10.1103/PhysRevC.79.024301

©2009 American Physical Society

Authors & Affiliations

S. A. Sheets1, U. Agvaanluvsan2, J. A. Becker2, F. Bečvář3, T. A. Bredeweg4, R. C. Haight4, M. Jandel4, M. Krtička3, G. E. Mitchell1, J. M. O'Donnell4, W. Parker2, R. Reifarth4, R. S. Rundberg4, E. I. Sharapov5, J. L. Ullmann4, D. J. Vieira4, J. B. Wilhelmy4, J. M. Wouters4, 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, L-414, 7000 East Avenue, Livermore, California 94551, USA
  • 3Charles University in Prague, 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

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Vol. 79, Iss. 2 — February 2009

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