Shape coexistence in Tl189

A. J. Kreiner, J. Davidson, M. Davidson, H. Mosca, L. L. Riedinger, C. R. Bingham, M. W. Guidry, and A. C. Kahler
Phys. Rev. C 38, 2674 – Published 1 December 1988
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Abstract

High spin states of Tl189 have been populated through the fusion-evaporation reactions [24169Mg(125 MeV),4n], [28165Si(140 MeV),4n], and [20175Ne(128 MeV),6n] and its subsequent decay studied by in-beam γ-ray spectroscopy techniques. Among the firmly established features there are two band structures resulting from the coupling of the h(9/2 and i(13/2 proton intruder states to the oblate ground-state band of the Hg core. However, above a certain excitation energy both bands show structural changes possibly related to the prolate shaped excited band in Hg188. At least for the π̃i(13/2 case, coexistence of both shapes is observed.

  • Received 18 July 1988

DOI:https://doi.org/10.1103/PhysRevC.38.2674

©1988 American Physical Society

Authors & Affiliations

A. J. Kreiner

  • Departamento de Fisica, Comisión Nacional de Energía Atómica, 1429 Buenos Aires, Argentina

J. Davidson and M. Davidson

  • Departamento de Fíasica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria-Nuñez, Argentina

H. Mosca

  • Radioquímica, Comisión Nacional de Energía Atómica, 1429 Buenos Aires, Argentina

L. L. Riedinger, C. R. Bingham, M. W. Guidry, and A. C. Kahler

  • Department of Physics, University of Tennessee, Knoxville, Tennessee 37996
  • Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

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Vol. 38, Iss. 6 — December 1988

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