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Phys. Rev. C 81, 035801 (2010) [5 pages]

Photoneutron cross sections for 96Zr: A systematic experimental study of photoneutron and radiative neutron capture cross sections for zirconium isotopes

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H. Utsunomiya1, S. Goriely2, H. Akimune1, H. Harada3, F. Kitatani3, S. Goko3, H. Toyokawa4, K. Yamada4, T. Kondo1, O. Itoh1, M. Kamata1, T. Yamagata1, Y.-W. Lui5, S. Hilaire6, and A. J. Koning7
1Department of Physics, Konan University, Okamoto 8-9-1, Higashinada, Kobe 658-8501, Japan
2Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, Campus de la Plaine, CP-226, B-1050 Brussels, Belgium
3Japan Atomic Energy Agency, Tokai-mura, Naka, Ibaraki 319-1195, Japan
4National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
5Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
6Département de Physique Théorique et Appliquée, Service de Physique Nucléaire, B.P. 12 F-91680 Bruyères-le-Châtel, France
7Nuclear Research and Consultancy Group, P.O. Box 25, NL-1755 ZG Petten, The Netherlands

Received 21 December 2009; published 15 March 2010

Photoneutron cross sections were measured for 96Zr near neutron threshold with quasimonochromatic laser-Compton-scattering γ-ray beams. A systematic analysis of photoneutron and radiative neutron capture data for zirconium isotopes within the statistical model calculation leads to a unified picture of low-energy γ-ray strengths for zirconium isotopes that is described by the HFB + QRPA model of E1 strength supplemented with an extra γ strength attributed to a giant M1 resonance. Results of the systematic analysis including radiative neutron capture cross sections for radioactive 95Zr and 93Zr nuclei are presented.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.81.035801
DOI:
10.1103/PhysRevC.81.035801
PACS:
25.20.-x, 21.10.Pc, 24.30.Gd, 27.60.+j
 
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