The Effect of Proton-Neutron Interactions on Energy Spectra of Nuclei of A≃120-145

概要

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The location of neutron-single hole states 2d_<3/2>, 3s_<1/2>, 1h_<(11)/2> and 2d_<5/2> in neutron magic N=82 nuclei ^<136>Xe, ^<138>Ba, ^<140>Ce, ^<142>Nd and ^<144>Sm is studied on the basis of proton-neutron interactions. The observed variations of the neutron-single hole energies of 2d_<3/2>, 1h_<(11)/2> and 2d_<5/2> states relative to that of the 3s_<1/2> state in going from ^<135>Xe to ^<143>Sm are reproduced fairly well by the use of an interaction V_<pn>=(V_0+V_1σ_p・σ_n)δ(r_p-R_n) and of harmonic oscillator wave functions. The proton configurations which have been obtained from proton-transfer reactions on these isotones are employed in the calculations. Also the dominant features of the neutron-state structures and the proton-state structures observed in N=82 isotones and Z=50 isotopes are discussed from the standpoint of the proton-neutron interactions.
社団法人日本物理学会の論文
1972-06-05