New Region of Deformation: The Neutron-Rich Sulfur Isotopes

H. Scheit; T. Glasmacher; B. A. Brown; J. A. Brown; P. D. Cottle; P. G. Hansen; R. Harkewicz; M. Hellström; R. W. Ibbotson; J. K. Jewell; K. W. Kemper; D. J. Morrissey; M. Steiner; P. Thirolf; M. Thoennessen

doi:10.1103/PhysRevLett.77.3967

New Region of Deformation: The Neutron-Rich Sulfur Isotopes

H. Scheit, T. Glasmacher, B. A. Brown, J. A. Brown, P. D. Cottle, P. G. Hansen, R. Harkewicz, M. Hellström, R. W. Ibbotson, J. K. Jewell, K. W. Kemper, D. J. Morrissey, M. Steiner, P. Thirolf, and M. Thoennessen

Phys. Rev. Lett. 77, 3967 – Published 4 November 1996

Abstract

The energies and $B ({E 2; 0}_{g . s .}^{+} \to 2_{1}^{+})$ values for the lowest $J^{π} {= 2}^{+}$ states in the neutron-rich radioactive nuclei $^{38, 40, 42} S$ and $^{44, 46} Ar$ were measured via intermediate-energy Coulomb excitation. The results for $^{40, 42} S$ provide the first evidence of moderate deformation near $N = 28$ , while the effects of the $N = 28$ shell closure persist in the $Z = 18$ nucleus $^{46} Ar$ .

Received 15 April 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.3967

Authors & Affiliations

H. Scheit^1,2, T. Glasmacher^1,2, B. A. Brown^1,2, J. A. Brown¹, P. D. Cottle⁴, P. G. Hansen¹, R. Harkewicz¹, M. Hellström⁵, R. W. Ibbotson¹, J. K. Jewell⁴, K. W. Kemper⁴, D. J. Morrissey^1,3, M. Steiner¹, P. Thirolf¹, and M. Thoennessen^1,2

¹National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
²Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
³Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
⁴Department of Physics, Florida State University, Tallahassee, Florida 32306
⁵Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany