Smooth band termination in Sn-108

R Wadsworth, C W Beausang, M Cromaz, J DeGraaf, T E Drake, D B Fossan, S Flibotte, A GalindoUribarri, K Hauschild, I M Hibbert, G Hackman, J R Hughes, V P Janzen, D R LaFosse, S M Mullins, E S Paul, D C Radford, H Schnare, P Vaska, D WardJ N Wilson, I Ragnarsson

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)2763-2769
Number of pages7
JournalPhysical Review C
Volume53
Issue number6
Publication statusPublished - Jun 1996

Keywords

  • HIGH-SPIN
  • ISOTOPES
  • STATES

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