Shape Coexistence and Mixing in 152Sm

W. D. Kulp; J. L. Wood; P. E. Garrett; C. Y. Wu; D. Cline; J. M. Allmond; D. Bandyopadhyay; D. Dashdorj; S. N. Choudry; A. B. Hayes; H. Hua; S. R. Lesher; M. Mynk; M. T. McEllistrem; C. J. McKay; J. N. Orce; R. Teng; S. W. Yates

arXiv · 0706.4129

Shape Coexistence and Mixing in 152Sm

W. D. Kulp·J. L. Wood·P. E. Garrett·C. Y. Wu·D. Cline·J. M. Allmond·D. Bandyopadhyay·D. Dashdorj·S. N. Choudry·A. B. Hayes·H. Hua·S. R. Lesher·M. Mynk·M. T. McEllistrem·C. J. McKay·J. N. Orce·R. Teng·S. W. Yates

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Abstract

Experimental studies of 152Sm using multiple-step Coulomb excitation and inelastic neutron scattering provide key data that clarify the low-energy collective structure of this nucleus. No candidates for two-phonon beta-vibrational states are found. Experimental level energies of the ground-state and first excited (0+ state) rotational bands, electric monopole transition rates, reduced quadrupole transition rates, and the isomer shift of the first excited 2+ state are all described within ~10% precision using two-band mixing calculations. The basic collective structure of 152Sm is described using strong mixing of near-degenerate coexisting quasi-rotational bands with different deformations.

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W. D. Kulp, J. L. Wood, P. E. Garrett, C. Y. Wu, D. Cline, J. M. Allmond, D. Bandyopadhyay, D. Dashdorj, S. N. Choudry, A. B. Hayes, H. Hua, S. R. Lesher, M. Mynk, M. T. McEllistrem, C. J. McKay, J. N. Orce, R. Teng, S. W. Yates. 2007-06-28. Shape Coexistence and Mixing in 152Sm. https://arxiv.org/abs/0706.4129

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