New Region of Deformation: The Neutron-Rich Sulfur Isotopes
H. ScheitNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824T. GlasmacherDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824B. A. BrownNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824J. BrownNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824P. D. CottleDepartment of Physics, Florida State University, Tallahassee, Florida 32306P.G. HansenNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824Richard HarkewiczNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824M. HellströmGesellschaft für Schwerionenforschung, D-64291 Darmstadt, GermanyR. W. IbbotsonNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824J. JewellDepartment of Physics, Florida State University, Tallahassee, Florida 32306K. W. KemperDepartment of Physics, Florida State University, Tallahassee, Florida 32306D. J. MorrisseyDepartment of Chemistry, Michigan State University, East Lansing, Michigan 48824M. SteinerNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824P. G. ThirolfNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824M. ThoennessenNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
1996en
ABI
Аннотация
The energies and $B({E2;0}_{\mathrm{g}.\mathrm{s}.}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ values for the lowest ${J}^{\ensuremath{\pi}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2}^{+}$ states in the neutron-rich radioactive nuclei ${}^{38,40,42}\mathrm{S}$ and ${}^{44,46}\mathrm{Ar}$ were measured via intermediate-energy Coulomb excitation. The results for ${}^{40,42}\mathrm{S}$ provide the first evidence of moderate deformation near $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}28$, while the effects of the $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}28$ shell closure persist in the $Z\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}18$ nucleus ${}^{46}\mathrm{Ar}$.
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