Phys. Rev. C
79,
035806
(2009)
[18 pages]
β-decay half-lives and β-delayed neutron emission probabilities of nuclei in the region A≲110, relevant for the r process
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
Received 30 December 2008; published 26 March 2009
Measurements of β-decay properties of A≲110 r-process nuclei have been completed at the National Superconducting Cyclotron Laboratory at Michigan State University. β-decay half-lives for 105Y, 106,107Zr, and 111Mo, along with β-delayed neutron emission probabilities of 104Y, 109,110Mo and upper limits for 105Y, 103-107Zr, and 108,111Mo 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.
© 2009 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.79.035806
DOI:
10.1103/PhysRevC.79.035806
PACS:
23.40.-s, 21.10.Tg, 27.60.+j, 26.30.-k
*pereira@nscl.msu.edu †Present address: Centro de Física Nuclear da Universidade de Lisboa, 1649-003, Lisboa, Portugal.
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