Revalidation of the isobaric multiplet mass equation at A = 53, T = 3/2

J. Su,W.P. Liu,N. T. Zhang,Y.P. Shen,Y. H. Lam,N. Smirnova, M. MacCormick,J. S. Wang,L. Jing,Z. H. Li,Y.B. Wang, B. Guo,S.Q. Yan,Yong Li,S. Zeng, G. Lian,X.C. Du,L. Gan,X.X. Bai,Z.C. Gao,Y. H. Zhang,X. H. Zhou,X.D. Tang,J. He,Y.Y. Yang,S. L. Jin, P. Ma, J.B. Ma, Min Huang,Zhen Bai,Ye-Ling Zhou, W. H. Ma,J. F. Hu,S. W. Xu, S. Ma,S. Chen,L. Y. Zhang, B. Ding, G. Audi

Physics Letters B（2016）

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摘要

The T=3/2 isobaric analog state (IAS) in 53Co is firmly established through a comprehensive measurement of β-delayed γ and proton decay of 53Ni. The determined excitation energy of 53Co IAS combined with the mass of 53Co generates a precise mass excess of −38333.6(27)keV for the 53Co IAS, which is 70(18) keV lower than the previously adopted value. The new result solves a problem raised by incorrect assignments of the 53Co IAS of unexpected deviation from the isobaric multiplet mass equation (IMME) at A=53, T=3/2.

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关键词

β-Delayed γ decay,Isobaric analog state,Isobaric multiplet mass equation

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