Acta Physica Polonica B

Vol. 38, No. 4, April 2007, page 1381


Spectroscopy of 91Zr51 at Medium to High Spins

N.J. Thompson, P.H. Regan, A.B. Garnsworthy, A.D. Ayangeakaa, H.C. Ai, L. Amon, R.B. Cakirli, R.F. Casten, C.R. Fitzpatrick, S.J. Freeman, G. Guerdal, A. Heinz, G.A. Jones, E.A. McCutchan, J. Qian, V. Werner, S.J. Williams, R. Winkler

Identification of near-yrast states in the \beta -stable nucleus 91Zr51 has been carried out using the fusion evaporation reaction, 82Se(13C,4n)91Zr at an incident beam energy of 50 MeV. States above the reported \tau =6 \mu s, I\pi ={21}/{2}+ isomeric level at Ex=3167 keV have been identified for the first time in this work, a tentative decay scheme of near-yrast states to excitation energies in excess of 10 MeV has been constructed. These states are of relevance to shell model structures formed via limited valence-space configurations in this semi-magic N=51 nucleus.

PACS numbers: 21.10.--k, 21.60.Cs, 27.60.+j, 29.30.Kv



 
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