EPJ Web of Conferences (Oct 2012)

Decay of a three-quasiparticle isomer in the neutron-rich nucleus 183Ta

  • Zhu S.,
  • McCutchan E.A.,
  • Seweryniak D.,
  • Stefanescu I.,
  • Watanabe H.,
  • Lister C.J.,
  • Lauritsen T.,
  • Chiara C.J.,
  • Chowdhury P.,
  • Hughes R.O.,
  • Janssens R.V.F.,
  • Byrne A.P.,
  • Carpenter M.P,
  • Dracoulis G.D.,
  • Kondev F.G.,
  • Palalani N.,
  • Lane G.J.

DOI
https://doi.org/10.1051/epjconf/20123506004
Journal volume & issue
Vol. 35
p. 06004

Abstract

Read online

Excited states in neutron-rich tantalum isotopes have been studied with deep-inelastic reactions using 136Xe ions incident on a 186W target. New transitions observed below the τ=1.3 μs isomer in 183Ta have enabled the establishment of its energy and put limits on the spin and parity. On the basis of the reduced hindrances for the depopulating transitions, a 3-quasiparticle configuration of ν1/2−[510]11/2+[615] ⊗ π9/2−[514] is suggested.