Chiral doublet structures in odd-odd n = 75 isotones: chiral vibrations.


New sideband partners of the yrast bands built on the pi(h11/2)nu(h11/2) 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.

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@article{Starosta2001ChiralDS, title={Chiral doublet structures in odd-odd n = 75 isotones: chiral vibrations.}, author={Krzysztof Starosta and Takao Koike and Cirelli Chiara and David Fossan and D. R. LaFosse and Adam A Hecht and C. W. Beausang and M. A. Caprio and Jessica R. Cooper and Reiner Kr{\"{u}cken and J. R. Novak and N . V . Zamfir and K. E. Zyromski and Disciplines James Hartley and D. L. Balabanski and Jane Zhang and Scott Frauendorf and Vesselin Dimitrov}, journal={Physical review letters}, year={2001}, volume={86 6}, pages={971-4} }