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On the difference between proton and neutron spin-orbit splittings in nuclei

  • V.I. Isakov
  • K.I. Erokhina
  • H. Mach
  • M. Sanchez-Vega
  • B. Fogelberg

Abstract:

The latest experimental data on nuclei at 132Sn permit us for the first time to determine the spin-orbit splittings of neutrons and protons in identical orbits in this neutron-rich doubly magic region and compare the case to that of 208Pb. Using the new results, which are now consistent for the two neutron-rich doubly magic regions, a theoretical analysis defines the isotopic dependence of the mean-field spin-orbit potential and leads to a simple explicit expression for the difference between the spin-orbit splittings of neutrons and protons. The isotopic dependence is explained in the framework of different theoretical approaches.

PACS. 21.60.Cs Shell model – 21.10.Pc Single-particle levels and strength functions – 21.60.Jz Hartree-Fock and random-phase approximations – 24.10.Jv Relativistic models 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • V.I. Isakov
    • 1
  • K.I. Erokhina
    • 2
  • H. Mach
    • 3
  • M. Sanchez-Vega
    • 3
  • B. Fogelberg
    • 3
  1. 1.Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina 188300, RussiaRU
  2. 2.Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg 194021, RussiaRU
  3. 3.Department of Radiation Sciences, Uppsala University, Nyköping S-61162, SwedenSE

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