Elsevier

Nuclear Physics A

Volume 216, Issue 2, 3 December 1973, Pages 407-428
Nuclear Physics A

Proton-neutron correlations in nuclei with N = 30

https://doi.org/10.1016/0375-9474(73)90476-4Get rights and content

Abstract

Structure of the nuclei with N = 30 and Z = 20–28 is investigated by the nuclear shell model within the proton-neutron configurations (1f72)z−20p × (2p32, 2pcase12, 1fcase52)2n. Effective proton-neutron interactions determined by a least-squares fit to the observed spectra of N = 29 nuclei are adopted. Agreement of the calculated spectra with experimental spectra is satisfactory. Strong correlations between protons and neutrons break down the pairing scheme and lower the first J = 2 levels in doubly even nuclei, which is shown from the resultant wave functions. A relation between the shell model and collective rotational model is discussed concerning the calculated rotation-like spectrum of 56Fe. Electromagnetic properties and spectroscopic factors of single-nucleon transfer reactions are calculated. They are in good agreement with experiments.

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