The first candidate for chiral nuclei in the $A\sim80$ mass region: $^{80}$Br

S. Y. Wang; B. Qi; L. Liu; S. Q. Zhang; H. Hua; X. Q. Li; Y. Y. Chen; L. H. Zhu; J. Meng; S. M. Wyngaardt; P. Papka; T. T. Ibrahim; R. A. Bark; P. Datta; E. A. Lawrie; J. J. Lawrie; S. N. T. Majola; P. L. Masiteng; S. M. Mullins; J. Gál; G. Kalinka; J. Molnár; B. M. Nyakó; J. Timár; K. Juhász; R. Schwengner

doi:10.1016/j.physletb.2011.07.055

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arXiv · 1107.5109

The first candidate for chiral nuclei in the $A\sim80$ mass region: $^{80}$Br

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Abstract

Excited states of $^{80}$Br have been investigated via the $^{76}$Ge($^{11}$B, $\alpha$3n) and $^{76}$Ge($^{7}$Li, 3n) reactions and a new $\Delta I$ = 1 band has been identified which resides $\sim$ 400 keV above the yrast band. Based on the experimental results and their comparison with the triaxial particle rotor model calculated ones, a chiral character of the two bands within the $\pi g_{9/2}\otimes \nu g_{9/2}$ configuration is proposed, which provides the first evidence for chirality in the $A\sim80$ region.

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S. Y. Wang, B. Qi, L. Liu, S. Q. Zhang, H. Hua, X. Q. Li, Y. Y. Chen, L. H. Zhu, J. Meng, S. M. Wyngaardt, P. Papka, T. T. Ibrahim, R. A. Bark, P. Datta, E. A. Lawrie, J. J. Lawrie, S. N. T. Majola, P. L. Masiteng, S. M. Mullins, J. Gál, G. Kalinka, J. Molnár, B. M. Nyakó, J. Timár, K. Juhász, R. Schwengner. 2011-07-26. The first candidate for chiral nuclei in the $A\sim80$ mass region: $^{80}$Br. https://doi.org/10.1016/j.physletb.2011.07.055

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