A new effective interaction for $0\hslash \omega$ shell model calculations in the sdpf valence space

Abstract

The neutron rich isotopes with Z<20, in particular those with neutron numbers around N=28,have been at the focus of a lot experimental and theoretical scrutiny during the last few years.Shell model calculations using the effective interaction SDPF-NR, were able to predictor to explain most of the properties featured by these nuclei. Prominent among them is the disappearance of the N=28 shell closure for Z<=16. We have incorporated to SDPF-NR some modifications, either on purely theoretical grounds or guided by new experimental information. The proposed interaction, SDPF-U, contains USD as its sd-shell part and KB3G as its pf-shell-part. Its range of applicability is enlarged and its reliability enhanced with respect to the earlier version.

6 pages 4 figures, accepted in Phys. Rev. C

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• Prolate-Spherical Shape Coexistence at N=28 in ${}^{44}$S
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• Isospin Non-Conservation in $sd$-Shell Nuclei
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• Mass Measurements Demonstrate a Strong N =28 Shell Gap in Argon
• Quadrupole collectivity beyond N=28: Intermediate-energy Coulomb excitation of 47,48Ar
• In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar
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• Is the structure of 42Si understood?
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• Hartree-Fock-Bogoliubov theory for odd-mass nuclei with a time-odd constraint and application to deformed halo nuclei
• Symmetry-projected variational calculations with the numerical suite TAURUS I. Variation after particle-number projection
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• Spectroscopy of 46Ar by the (t,p) two-neutron transfer reaction
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• In-beam spectroscopic studies of ${}^{44}$S nucleus
• Examining the $N$ = 28 shell closure through high-precision mass measurements of ${}^{46-48}$Ar
• Shell-model based study of the direct capture in neutron-rich nuclei
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• Inelastic nuclear scattering from neutrinos and dark matter
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• Experimental Study of the ${}^{\text{38}}$S Excited Level Scheme
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