β-decay half-lives and β-delayed neutron emission probabilities of nuclei in the region A110, relevant for the r process

J. Pereira, S. Hennrich, A. Aprahamian, O. Arndt, A. Becerril, T. Elliot, A. Estrade, D. Galaviz, R. Kessler, K.-L. Kratz, G. Lorusso, P. F. Mantica, M. Matos, P. Möller, F. Montes, B. Pfeiffer, H. Schatz, F. Schertz, L. Schnorrenberger, E. Smith, A. Stolz, M. Quinn, W. B. Walters, and A. Wöhr
Phys. Rev. C 79, 035806 – Published 26 March 2009

Abstract

Measurements of β-decay properties of A110 r-process nuclei have been completed at the National Superconducting Cyclotron Laboratory at Michigan State University. β-decay half-lives for Y105, Zr106,107, and Mo111, along with β-delayed neutron emission probabilities of Y104, Mo109,110 and upper limits for Y105, Zr103107, and Mo108,111 have been measured for the first time. Studies on the basis of the quasi-random-phase approximation are used to analyze the ground-state deformation of these nuclei.

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  • Received 30 December 2008

DOI:https://doi.org/10.1103/PhysRevC.79.035806

©2009 American Physical Society

Authors & Affiliations

J. Pereira1,2,*, S. Hennrich2,3,4, A. Aprahamian5,6, O. Arndt3,4, A. Becerril1,2,7, T. Elliot1,2,7, A. Estrade1,2,7, D. Galaviz1,2,†, R. Kessler2,3,4, K.-L. Kratz4,8, G. Lorusso1,2,7, P. F. Mantica1,9, M. Matos1,2, P. Möller10, F. Montes1,2, B. Pfeiffer3,4, H. Schatz1,2,7, F. Schertz2,3,4, L. Schnorrenberger2,11, E. Smith2,12, A. Stolz1, M. Quinn5,6, W. B. Walters13, and A. Wöhr5,6

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan, USA
  • 2Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan, USA
  • 3Institut für Kernchemie, Universität Mainz, Mainz, Germany
  • 4Virtuelles Institut für Struktur der Kerne and Nuklearer Astrophysik, Mainz, Germany
  • 5Institute of Structure and Nuclear Astrophysics, University of Notre Dame, South Bend, Indiana, USA
  • 6Joint Institute for Nuclear Astrophysics, University of Notre Dame, South Bend, Indiana, USA
  • 7Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, USA
  • 8Max Planck Institut für Chemie, Otto-Hahn-Institut, Mainz, Germany
  • 9Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
  • 10Theoretical Division, Los Alamos National Laboratory, New Mexico, USA
  • 11Institut für Kernphysik, TU Darmstadt, Darmstadt, Germany
  • 12Department of Physics, Ohio State University, Columbus, Ohio, USA
  • 13Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA

  • *pereira@nscl.msu.edu
  • Present address: Centro de Física Nuclear da Universidade de Lisboa, 1649-003, Lisboa, Portugal.

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Vol. 79, Iss. 3 — March 2009

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