Competing Shapes And Alignments In Neutron-Rich Hf Nuclei

Details Competing Shapes And Alignments In Neutron-Rich Hf Nuclei Competing Shapes And Alignments In Neutron-Rich Hf Nuclei

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1012..265c&link_type=abstract

FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR 2. AIP Conference Proceedings, Volume 1012, pp. 265-269 (

Astronomy and Astrophysics

Astrophysics

1

Collective Levels, Collective Models, Gamma Transitions And Level Energies, 150<=A<=189

Scientific paper

The talk will focus on spin-dependent competition between oblate and prolate shape minima in the potential energy landscape of 180Hf (the most neutron-rich stable isotope), mediated via the alignment of valence nucleons. Results of a prompt spectroscopic study, using deep inelastic reactions with Gammasphere and CHICO, bombarding a thin 232Th target with a 180Hf beam ~25% above the Coulomb barrier, will be presented. Nucleon alignments in both prolate and oblate minima will be discussed, as well as the favoring of oblate collective rotation at high spins, observed through a mixing with gamma vibrations built on the prolate shape.

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