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

J. Su, , T. Zhang, N. , P. Shen, Y. , H. Lam, Y. , A. Smirnova, N. , P. Liu W. , T. Zhang N. , P. Shen Y. , H. Lam Y. , A. Smirnova N. , M. Maccormick (1) , S. Wang J. , L. Jing , H. Li Z. , B. Wang Y. , B. Guo , Q. Yan S. , J. Li Y. , S. Zeng , G. Lian , C. Du X. , L. Gan , X. Bai X. , C. Gao Z. , H. Zhang Y. , H. Zhou X. , D. Tang X. , J. He J. , Y. Yang Y. , L. Jin S. , P. Ma , B. Ma J. , R. Huang M. , Z. Bai , J. Zhou Y. , H. Ma W. , J. Hu , W. Xu S. , B. Ma S. , Z. Chen S. , Ling Yan Zhang , B. Ding , G. Audi (2)

1 IPNO - Institut de Physique Nucléaire d'Orsay
2 CSNSM SNO

The T = 3/2 isobaric analog state (IAS) in Co-53 is firmly established through a comprehensive measurement of beta-delayed gamma and proton decay of Ni-53. The determined excitation energy of Co-53 IAS combined with the mass of Co-53 generates a precise mass excess of -38 333.6(27) keV for the Co-53 IAS, which is 70(18) keV lower than the previously adopted value. The new result solves a problem raised by incorrect assignments of the Co-53 IAS of unexpected deviation from the isobaric multiplet mass equation (IMME) at A = 53, T = 3/2. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.

Mots clés: BETA-DECAY; HIGH-RESOLUTION; MODEL; NUCLEI; TI-41; COEFFICIENTS; LINE

Domaines: Physique [physics]; Physique Nucléaire Expérimentale [nucl-ex]

J. Su,, T. Zhang, N., P. Shen, Y., H. Lam, Y., A. Smirnova, N., et al.. Revalidation of the isobaric multiplet mass equation at A=53, T=3/2. Physics Letters B, 2016, 756, pp.323-327. ⟨10.1016/j.physletb.2016.03.024⟩. ⟨in2p3-01314821⟩