Phys. Rev. C 45, 613 - 639 (1992)Prolate and oblate band structures in odd-odd 186,188Au |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1981: |
V. P. Janzen, Z.-M. Liu, M. P. Carpenter, L. H. Courtney, H.-Q. Jin, A. J. Larabee, and L. L. Riedinger
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
J. K. Johansson, D. G. Popescu, and J. C. Waddington
Tandem Accelerator Laboratory, McMaster University, Hamilton, Canada L8S 4K1
S. Monaro and S. Pilotte
Laboratoire de Physique Nucléaire, Université de Montréal, Montréal, Canada H3C 3J7
F. Dönau
Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831
Received 8 March 1991
High-spin states have been populated in odd-odd 186,188Au via the heavy-ion 171,173Yb(19F,4n) reactions at 93–94 MeV. Rotational bands built on 11- oblate νi13/2-1⊗πh11/2-1 structures have been observed in both nuclei, similar to those reported in 190-194Au. Two new strongly coupled bands in 186Au are interpreted as prolate πh9/2⊗νi132 and πi13/2⊗νi13/2 configurations. Based on blocking arguments a band crossing in the latter structure is attributed to the alignment of h9/2 protons. Measured B(M1;I→I-1)/B(E2;I→I-2) ratios are compared to predictions of the Dönau and Frauendorf geometrical formalism extended to odd-odd cases.
©1992 The American Physical Society
URL: http://link.aps.org/abstract/PRC/v45/p613
DOI: 10.1103/PhysRevC.45.613
PACS: 21.10.Re, 27.70.+q, 25.70.-z
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