Measurement of the 52Fe mass via the precise proton-decay energy of 53Com
1 China Institute of Atomic Energy, P. O. Box 275(1), Beijing 102413, China
2 Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
3 School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
Published online: 12 February 2016
The proton decay of 53Com(3174.1 keV; 19/2−) was investigated via the fragmentation of a 58Ni primary beam. The proton-decay energy was determined with an improved precision to be 1558(8) keV. With this new result and the mass of 53Com, the 52Fe mass excess was derived to be −48330(8) keV, which is in good agreement with the AME12 value. A new recommended value of −48331.6(49) keV is given.
© Owned by the authors, published by EDP Sciences, 2016
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