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

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...

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Bibliographic Details
Published in:Physics letters. B 2016-05, Vol.756 (756), p.323-327
Main Authors: Su, J., Liu, W.P., Zhang, N.T., Shen, Y.P., Lam, Y.H., Smirnova, N.A., MacCormick, M., Wang, J.S., Jing, L., Li, Z.H., Wang, Y.B., Guo, B., Yan, S.Q., Li, Y.J., Zeng, S., Lian, G., Du, X.C., Gan, L., Bai, X.X., Gao, Z.C., Zhang, Y.H., Zhou, X.H., Tang, X.D., He, J.J., Yang, Y.Y., Jin, S.L., Ma, P., Ma, J.B., Huang, M.R., Bai, Z., Zhou, Y.J., Ma, W.H., Hu, J., Xu, S.W., Ma, S.B., Chen, S.Z., Zhang, L.Y., Ding, B., Audi, G.
Format: Article
Language:English
Subjects:
Decay
Deviation
Elementary particles
Excitation
Isobaric analog state
Isobaric multiplet mass equation
Mathematical analysis
Nuclear Experiment
Physics
β-Delayed γ decay
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Summary: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.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2016.03.024