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Margareta Hellström

Researcher

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Isomer Spectroscopy of Cd-127

Author

  • F. Naqvi
  • M. Gorska
  • L. Caceres
  • A. Jungclaus
  • M. Pfuetzner
  • H. Grawe
  • F. Nowacki
  • K. Sieja
  • S. Pietri
  • E. Werner-Malento
  • P. H. Regan
  • Dirk Rudolph
  • Z. Podolyak
  • J. Jolie
  • K. Andgren
  • T. Beck
  • P. Bednarczyk
  • J. Benlliure
  • G. Benzoni
  • A. M. Bruce
  • E. Casarejos
  • B. Cederwall
  • F. C. L. Crespi
  • P. Detistov
  • Zs. Dombradi
  • P. Doornenbal
  • H. Geissel
  • J. Gerl
  • J. Grebosz
  • B. Hadinia
  • Margareta Hellström
  • Robert Hoischen
  • G. Ilie
  • A. Khaplanov
  • I. Kojouharov
  • M. Kmiecik
  • N. Kurz
  • S. Lalkovski
  • A. Maj
  • S. Mandal
  • V. Modamio
  • F. Montes
  • S. Myalski
  • W. Prokopowicz
  • P. Reiter
  • H. Schaffner
  • G. Simpson
  • D. Sohler
  • S. J. Steer
  • S. Tashenov
  • J. Walker
  • O. Wieland
  • H. J. Wollersheim
Show all

Summary, in English

The spin and configurational structure of excited states of Cd-127, the two-proton and three-neutron hole neighbor of Sn-132, has been studied. An isomeric state with a half-life of 17.5(3) mu s was populated in the fragmentation of a Xe-136 beam on a Be-9 target at a beam energy of 750 MeV/u. Time distributions of the delayed gamma transitions and gamma gamma coincidence relations were exploited to construct a decay scheme. The observed yrast (19/2)(+) isomer is proposed to have dominant configurations of nu(h(11/2)(-3))pi(g(9/2)(-1), p(1/2)(-1)), nu(h(11/2)(-2)d(3/2)(-1))pi(g(9/2)(-2)), and nu(h(11/2)(-2), s(1/2)(-1))pi(g(9/2)(-2)) and to decay by two competing stretched M2 and E3 transitions. Experimental results are compared with the isotone Sn-129. The new information provides input for the proton-neutron interaction and the evolution of neutron hole energies in nuclei around the doubly magic Sn-132 core.

Department/s

  • Nuclear physics
  • Dept of Physical Geography and Ecosystem Science

Publishing year

2010

Language

English

Pages

5-034323

Publication/Series

Physical Review C (Nuclear Physics)

Volume

82

Issue

3

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

Research group

  • Nuclear Structure

ISBN/ISSN/Other

  • ISSN: 0556-2813