Chirality and octupole correlations in As74

X. Xiao,S. Y. Wang,C. Liu, R. A. Bark, J. Meng,S. Q. Zhang, B. Qi, H. Hua,P. Jones, S. M. Wyngaardt,S. Wang, D. P. Sun,Z. Q. Li,N. B. Zhang, H. Jia, R. J. Guo, X. C. Han, L. Mu, X. Lu,W. Z. Xu, C. Y. Niu,C. G. Wang,E. A. Lawrie, J. J. Lawrie, J. F. Sharpey-Schafer,M. Wiedeking, S. N. T. Majola, T. D. Bucher, T. Dinoko, B. Maqabuka, L. Makhathini, L. Mdletshe, N. A. Khumalo,O. Shirinda, K. Sowazi

Physical Review C（2022）

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摘要

High-spin states in As-74 were studied using the Ge-74(4He, 1p3n) reaction at beam energies of 58.6 and 62.6 MeV. Two positive-and one negative-parity bands have been identified in As-74. The two positive-parity bands are interpreted as chiral doublet bands, which is supported by the triaxial particle rotor model. Three electric dipole transitions linking the yrast positive-and negative-parity bands were also observed in this work, suggesting the existence of octupole correlations in As-74.

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关键词

octupole correlations,chirality

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