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Mass Measurements of the Neutron-Deficient 41Ti, 45Cr, 49Fe, and 53Ni Nuclides: First Test of the Isobaric Multiplet Mass Equation in fp-Shell Nuclei

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Wang,  M.
Institute of Modern Physics, Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
CSNSM-IN2P3-CNRS, Université de Paris Sud;

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Citation

Zhang, Y., Xu, H., Litvinov, Y., Tu, X., Yan, X., Typel, S., et al. (2012). Mass Measurements of the Neutron-Deficient 41Ti, 45Cr, 49Fe, and 53Ni Nuclides: First Test of the Isobaric Multiplet Mass Equation in fp-Shell Nuclei. Physical Review Letters, 109(10): 102501, pp. 1-5. doi:10.1103/PhysRevLett.109.102501.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-EA7F-2
Abstract
Isochronous mass spectrometry has been applied to neutron-deficient 58Ni projectile fragments at the HIRFL-CSR facility in Lanzhou, China. Masses of a series of short-lived Tz=-3/2 nuclides including 41Ti, 45Cr, 49Fe, and 53Ni have been measured with a precision of 20–40 keV. The new data enable us to test for the first time the isobaric multiplet mass equation (IMME) in fp-shell nuclei. We observe that the IMME is inconsistent with the generally accepted quadratic form for the A=53, T=3/2 quartet. We perform full space shell model calculations and compare them with the new experimental results.