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arXiv · 0904.0797

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

A. Gade·P. Adrich·D. Bazin·B. A. Brown·J. M. Cook·C. Aa. Diget·T. Glasmacher·S. McDaniel·A. Ratkiewicz·K. Siwek·D. Weisshaar
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Abstract

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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A. Gade, P. Adrich, D. Bazin, B. A. Brown, J. M. Cook, C. Aa. Diget, T. Glasmacher, S. McDaniel, A. Ratkiewicz, K. Siwek, D. Weisshaar. 2009-04-05. In-beam gamma-ray spectroscopy of very neutron-rich nuclei: Excited states in 46S and 48Ar. https://doi.org/10.1103/physrevlett.102.182502

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