Abstract
Three rotational bands in Sn-108 have been investigated to high frequency via the Fe-54(Ni-58,4p) reaction at 243 MeV. One of these bands is observed to undergo a band crossing at high spin. All three bands show a large decrease in their dynamic moments of inertia, to approximately one third of the rigid body value, as the rotational frequency approaches 1 MeV/h. The structures of these bands are thought to be based on 2p-2h proton excitations across the Z=50 shell gap and their properties can be interpreted in terms of cranked Nilsson-Strutinsky calculations. Such calculations predict smooth band terminations for all three structures and a gradual shape change from collective prolate, at low spin, to noncollective oblate at high spin.
Original language | English |
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Pages (from-to) | 2763-2769 |
Number of pages | 7 |
Journal | Physical Review C |
Volume | 53 |
Issue number | 6 |
Publication status | Published - Jun 1996 |
Keywords
- HIGH-SPIN
- ISOTOPES
- STATES