Evidence for prolate structure in light Pb isotopes from in-beam gamma-ray spectroscopy of 185Pb

J. Pakarinen, A. N. Andreyev, R. Julin, S. Juutinen, S. Antalic, L. Bianco, I. G. Darby, S. Eeckhaudt, T. Grahn, P. T. Greenlees, D. G. Jenkins, P. Jones, P. Joshi, H. Kettunen, M. Leino, A. -P. Leppanen, P. Nieminen, M. Nyman, R. D. Page, J. PerkowskiP. M. Raddon, P. Rahkila, D. Rostron, J. Saren, C. Scholey, J. Sorri, B. Streicher, J. Uusitalo, K. Van de Vel, M. Venhart, R. Wadsworth, D. R. Wiseman

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Abstract

For the first time, excited states in Pb-185 have been observed in in-beam gamma-ray spectroscopic measurements using the recoil-decay tagging method. The resulting level scheme reveals a strongly coupled yrast band structure that originates from coupling of the i(13/2) quasineutron to a prolate deformed core. The band is also observed to de-excite via the spherical alpha-decaying 13/2(+) isomeric state.

Original languageEnglish
Article number031303
Pages (from-to)-
Number of pages5
JournalPhysical Review C
Volume80
Issue number3
DOIs
Publication statusPublished - 24 Sept 2009

Keywords

  • HIGH-SPIN STATES
  • TOTAL DATA READOUT
  • NEUTRON-DEFICIENT
  • SHAPE COEXISTENCE
  • ALPHA-DECAY
  • INTRUDER STATES
  • DIPOLE BANDS
  • SHEARS BANDS
  • MASS NUCLEI
  • SHELL

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