Isomer Spectroscopy of Cd-127

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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.


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  • M. Gorska
  • L. Caceres
  • A. Jungclaus
  • M. Pfuetzner
  • H. Grawe
  • F. Nowacki
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  • J. Gerl
  • J. Grebosz
  • B. Hadinia
  • 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
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Enheter & grupper

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Sidor (från-till)034323-034323-5
TidskriftPhysical Review C (Nuclear Physics)
StatusPublished - 2010
Peer review utfördJa


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