Yrast bands in I117 and Xe116-118: Anomalous quasiparticle alignment frequencies and band termination

E. S. Paul*, D. B. Fossan, K. Hauschild, I. M. Hibbert, H. Schnare, J. M. Sears, I. Thorslund, R. Wadsworth, A. N. Wilson, J. N. Wilson

*Corresponding author for this work

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The yrast bands of neutron-deficient I117 and Xe116 have been extended to I∼34Latin small letter h with stroke, and Xe117,118 to I∼46Latin small letter h with stroke, using highfold γ-ray coincidence data collected with the Eurogam II spectrometer. Systematic quasiparticle alignment frequencies are discussed and compared to theoretical cranked Woods-Saxon calculations. The first pair alignment is attributed to h11/2 protons despite theoretical expectations for h11/2 neutron alignment; the neutron alignment appears significantly delayed. At higher spins, the I117 and Xe117 isobars exhibit contrasting forms of band termination.

Original languageEnglish
Pages (from-to)R2857-R2861
JournalPhysical Review C
Issue number6
Publication statusPublished - 1 Jan 1995

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