E2 core polarization for sd-shell single-particle states calculated with a skyrme-type interaction |
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Authors: | H Sagawa BA Brown |
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Institution: | Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321, USA |
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Abstract: | We have studied the core-polarization effect on the 1s0d-shell single-particle electromagnetic quadrupole transitions due to coupling with the quadrupole giant resonances. The self-consistent Hartree-Fock + RPA method is applied for the calculations of the single-particle wave functions and the response functions of the giant resonances. The particle-vibration-coupling model is used to calculate the core-polarization effect in the vicinity of 16O and 40Ca. The effective coupling hamiltonian is determined by the SGII Skyrme-type interaction which is used in the HF + RPA and particle-vibration-coupling calculation. The results are discussed for the proton and neutron effective charges and for the longitudinal and transverse form factor for the pro single-particle transition in 39K. Good agreement with recent longitudinal data for this transition is obtained. |
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