In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar

Details In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar

2009-04-05

arxiv.org/abs/0904.0797v1

Phys.Rev.Lett.102:182502,2009

Physics

Nuclear Physics

Nuclear Experiment

accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.102.182502

We report on the first in-beam gamma-ray spectroscopy study of the very neutron-rich nucleus 46S. The N=30 isotones 46S and 48Ar were produced in a novel way in two steps that both necessarily involve nucleon exchange and neutron pickup reactions, 9Be(48Ca,48K)X followed by 9Be(48K,48Ar+gamma)X at 85.7 MeV/u mid-target energy and 9Be(48Ca,46Cl)X followed by 9Be(46Cl,46S+gamma)X at 87.0 MeV/u mid-target energy, respectively. The results are compared to large-scale shell-model calculations in the sdpf shell using the SDPF-NR effective interaction and Z-dependent modifications.

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