New features of collective nuclear rotation at very high frequency in Sb109

V. P. Janzen*, D. R. Lafosse, H. Schnare, D. B. Fossan, A. Galindo-Uribarri, J. R. Hughes, S. M. Mullins, E. S. Paul, L. Persson, S. Pilotte, D. C. Radford, I. Ragnarsson, P. Vaska, J. C. Waddington, R. Wadsworth, D. Ward, J. Wilson, R. Wyss

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Three rotational bands have been discovered in the nucleus Sb109 that extend in angular momentum to 81/2Latin small letter h with stroke. The rotational frequency at the highest spins reaches Latin small letter h with strokeω1.4 MeV, the highest frequency so far observed in a heavy nucleus. With increasing frequency the collective moments of inertia of all three bands smoothly diminish to unexpectedly low values, scrJ(2)∼13Latin small letter h with stroke2 MeV-1, approximately one-third the rigid-body value, and, contrary to expectations, the moments of inertia become nearly equal to one another and to those of rotational bands in the core nucleus Sn108.

Original languageEnglish
Pages (from-to)1160-1163
Number of pages4
JournalPhysical Review Letters
Issue number8
Publication statusPublished - 1 Jan 1994

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