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Chiral Doublet Structures in Odd-Odd N=75 Isotones: Chiral Vibrations

K. Starosta, T. Koike, C. J. Chiara, D. B. Fossan, D. R. LaFosse, A. A. Hecht, C. W. Beausang, M. A. Caprio, J. R. Cooper, R. Krücken, J. R. Novak, N. V. Zamfir, K. E. Zyromski, D. J. Hartley, D. L. Balabanski, Jing-ye Zhang, S. Frauendorf, and V. I. Dimitrov
Phys. Rev. Lett. 86, 971 – Published 5 February 2001
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Abstract

New sideband partners of the yrast bands built on the πh11/2νh11/2 configuration were identified in 55Cs, 57La, and 61Pm N=75 isotones of 134Pr. These bands form with 134Pr unique doublet-band systematics suggesting a common basis. Aplanar solutions of 3D tilted axis cranking calculations for triaxial shapes define left- and right-handed chiral systems out of the three angular momenta provided by the valence particles and the core rotation, which leads to spontaneous chiral symmetry breaking and the doublet bands. Small energy differences between the doublet bands suggest collective chiral vibrations.

  • Received 24 July 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.971

©2001 American Physical Society

Authors & Affiliations

K. Starosta1,*, T. Koike1, C. J. Chiara1, D. B. Fossan1, D. R. LaFosse1, A. A. Hecht2, C. W. Beausang2, M. A. Caprio2, J. R. Cooper2, R. Krücken2, J. R. Novak2, N. V. Zamfir2,†, K. E. Zyromski2, D. J. Hartley3, D. L. Balabanski3,‡, Jing-ye Zhang3, S. Frauendorf4, and V. I. Dimitrov4,§

  • 1Department of Physics and Astronomy, SUNY at Stony Brook, Stony Brook, New York 11794
  • 2Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520
  • 3Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
  • 4Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 and Institute for Nuclear and Hadronic Physics, Research Center Rossendorf, 01314 Dresden, Germany

  • *On leave from Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland.
  • Also at Clark University, Worchester, MA 10610.
  • On leave from Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria.
  • §

See Also

Left-Handed Nuclei

Phys. Rev. Focus 7, 4 (2001)

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Vol. 86, Iss. 6 — 5 February 2001

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