Transition to the “island of inversion”: Fast-beam <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>γ</mi></math></span>-ray spectroscopy of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>2</mn><mn>8</mn><mo>,</mo><mn>3</mn><mn>0</mn></mrow></msup></mrow><mi mathvariant="normal">Na</mi></math></span>

B. V. Pritychenko; T. Glasmacher; P. D. Cottle; R. W. Ibbotson; K. W. Kemper; K. L. Miller; L. A. Riley; H. Scheit

doi:10.1103/PhysRevC.66.024325

Transition to the “island of inversion”: Fast-beam $γ$ -ray spectroscopy of $^{28, 30} Na$

B. V. Pritychenko, T. Glasmacher, P. D. Cottle, R. W. Ibbotson, K. W. Kemper, K. L. Miller, L. A. Riley, and H. Scheit

Phys. Rev. C 66, 024325 – Published 29 August 2002

Abstract

The excitation cross sections to the first collective excitations in $^{28, 30} Na$ have been measured with the technique of intermediate-energy heavy-ion scattering. The trends in the deduced intrinsic electromagnetic quadrupole moments obtained in the present study and in a previous study of $^{31} Na$ suggest that the ground state of $^{31} Na$ is dominated by intruder configurations, while the lighter sodium isotopes are not. This conclusion is supported by data on binding energies.

Received 6 May 2002

DOI:https://doi.org/10.1103/PhysRevC.66.024325

Authors & Affiliations

B. V. Pritychenko^1,2,*, T. Glasmacher^1,2, P. D. Cottle³, R. W. Ibbotson^1,†, K. W. Kemper³, K. L. Miller^1,2, L. A. Riley⁴, and H. Scheit^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 Physics, Florida State University, Tallahassee, Florida 32306
⁴Department of Physics and Astronomy, Earlham College, Richmond, Indiana 47374

^*Present address: Plumtree Software, Inc., San Francisco, CA 94111.
^†Present address: Brookhaven National Laboratory, Upton, NY 11973.
^‡Present address: Max-Planck-Institut für Kernphysik, Postfach 10 39 80, D-69029 Heidelberg, Germany.

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Vol. 66, Iss. 2 — August 2002

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