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

References in corpus (4)

• Collapse of the N=28 shell closure in ${}^{42}$Si
• Shell structure at N=28 near the dripline: spectroscopy of ${}^{42}$Si, ${}^{43}$P and ${}^{44}$S
• Measurement of excited states in 40Si and evidence for weakening of the N=28 shell gap
• Shell structure underlying the evolution of quadrupole collectivity in S-38 and S-40 probed by transient-field g-factor measurements on fast radioactive beams

Cited by in corpus (2)

• In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar
• Nuclear Structure of the even-even Argon isotopes with a focus on magnetic moments