Decay of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">TI</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>188</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and observed shape coexistence in the bands of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Hg</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>188</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

J. D. Cole; J. H. Hamilton; A. V. Ramayya; W. Lourens; B. van Nooijen; H. Kawakami; L. A. Mink; E. H. Spejewski; H. K. Carter; R. L. Mlekodaj; G. A. Leander; L. L. Riedinger; C. R. Bingham; E. F. Zganjar; J. L. Wood; R. W. Fink; K. S. Toth; B. D. Kern; K. S. R. Sastry

doi:10.1103/PhysRevC.30.1267

Decay of ${}^{188}{TI}$ and observed shape coexistence in the bands of ${}^{188}{Hg}$

J. D. Cole, J. H. Hamilton, A. V. Ramayya, W. Lourens, B. van Nooijen, H. Kawakami, L. A. Mink, E. H. Spejewski, H. K. Carter, R. L. Mlekodaj, G. A. Leander, L. L. Riedinger, C. R. Bingham, E. F. Zganjar, J. L. Wood, R. W. Fink, K. S. Toth, B. D. Kern, and K. S. R. Sastry

Phys. Rev. C 30, 1267 – Published 1 October 1984

Abstract

The decay of the isotope ${}^{188}{Tl}$ ( $T_{\frac{1}{2}} = 71 \pm 1$ s) was studied via conversion-electron, gamma, gamma-gamma, and gamma-conversion-electron measurements. Levels of ${}^{188}{Hg}$ were deduced. Two bands with quite different deformation were established. One band is built on a near spherical ground state and the other band is built on a well-deformed shape with an excited $0_{2}^{2}$ band head at 824.5 keV. The bands cross and coexist above and below the crossing point. Their crossing explains the unusual behavior of the moment of inertia of the yrast cascade.

Received 9 April 1984

DOI:https://doi.org/10.1103/PhysRevC.30.1267

Authors & Affiliations

J. D. Cole^*, J. H. Hamilton, A. V. Ramayya, W. Lourens^†, B. van Nooijen^†, H. Kawakami^‡, and L. A. Mink^§

Vanderbilt University, Nashville, Tennessee 37325

E. H. Spejewski, H. K. Carter, R. L. Mlekodaj, and G. A. Leander

UNISOR, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37830

L. L. Riedinger and C. R. Bingham

University of Tennessee, Knoxville, Tennessee 37816

E. F. Zganjar

Louisiana State University, Baton Rouge, Louisiana 70803

J. L. Wood and R. W. Fink

Georgia Institute of Technology, Atlanta, Georgia 30332

K. S. Toth

Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

B. D. Kern

University of Kentucky, Lexington, Kentucky 40504

K. S. R. Sastry

University of Massachusetts, Amherst, Massachusetts 01002

^*Present address: Louisiana State University, Baton Rouge, LA 70803.
^†Present address: Reactor Institute IRICKF, University of Delft, Delft, The Netherlands.
^‡Present address: Institute for Nuclear Study, University of Tokyo, Tokyo 188, Japan.
^§Present address: Arkansas State University, Jonesboro, AR 72401.

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Vol. 30, Iss. 4 — October 1984

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