skip to main content

This content will become publicly available on June 30, 2015

Title: Competing particle–hole excitations in 30Na: Constraining state-of-the-art effective interactions

The odd–odd nucleus 30Na is studied via a one-proton, one-proton–one-neutron and one-neutron removal reaction using an intermediate-energy 31Mg, 32Mg and 31Na radioactive ion beam, respectively. Combining high-resolution γ-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle–hole configurations. Negative-parity states in 30Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd–pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.
Authors:
 [1] ;  [2] ;  [2] ;  [1] ;  [2] ;  [3] ;  [3] ;  [2] ;  [2] ;  [3] ;  [3] ;  [2] ;  [3] ;  [1] ;  [3] ;  [3] ;  [3] ;  [2]
  1. Institut für Kernphysik, Technische Universität Darmstadt (Germany)
  2. Lawrence Berkeley National Lab., CA (United States)
  3. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI (United States)
Publication Date:
OSTI Identifier:
1198690
Grant/Contract Number:
AC02-05CH11231
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 748; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS