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Evolution of collectivity in 72Kr: evidence for rapid shape transition.
Iwasaki, H; Lemasson, A; Morse, C; Dewald, A; Braunroth, T; Bader, V M; Baugher, T; Bazin, D; Berryman, J S; Campbell, C M; Gade, A; Langer, C; Lee, I Y; Loelius, C; Lunderberg, E; Recchia, F; Smalley, D; Stroberg, S R; Wadsworth, R; Walz, C; Weisshaar, D; Westerberg, A; Whitmore, K; Wimmer, K.
Afiliação
  • Iwasaki H; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Lemasson A; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Morse C; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Dewald A; Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany.
  • Braunroth T; Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany.
  • Bader VM; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Baugher T; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Bazin D; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Berryman JS; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Campbell CM; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Gade A; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Langer C; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA.
  • Lee IY; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Loelius C; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Lunderberg E; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Recchia F; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Smalley D; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Stroberg SR; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Wadsworth R; Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom.
  • Walz C; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.
  • Weisshaar D; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Westerberg A; Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA.
  • Whitmore K; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Wimmer K; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA.
Phys Rev Lett ; 112(14): 142502, 2014 Apr 11.
Article em En | MEDLINE | ID: mdl-24765947
ABSTRACT
The transition rates from the yrast 2+ and 4+ states in the self-conjugate 72Kr nucleus were studied via lifetime measurements employing the GRETINA array with a novel application of the recoil-distance method. The large collectivity observed for the 4+→2+ transition suggests a prolate character of the excited states. The reduced collectivity previously reported for the 2+→0+ transition was confirmed. The irregular behavior of collectivity points to the occurrence of a rapid oblate-prolate shape transition in 72Kr, providing stringent tests for advanced theories to describe the shape coexistence and its evolution.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Estados Unidos
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Estados Unidos