Yrast bands in {sup 117}I and {sup 116{minus}118}Xe: Anomalous quasiparticle alignment frequencies and band termination

Journal Article · Thu Jun 01 00:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.R2857· OSTI ID:55123

Paul, E S ^[1]; Fossan, D B ^[2]; Hauschild, K; Hibbert, I M ^[3]; Schnare, H; Sears, J M; Thorslund, I ^[2]; Wadsworth, R ^[3]; Wilson, A N; Wilson, J N ^[1]

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1. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 3BX (United Kingdom)
2. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)
3. Department of Physics, University of York, Heslington, York YO1 5DD (United Kingdom)

The yrast bands of neutron-deficient {sup 117}I and {sup 116}Xe have been extended to {ital I}{similar_to}34{h_bar}, and {sup 117,118}Xe to {ital I}{similar_to}46{h_bar}, using highfold {gamma}-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 {ital h}{sub 11/2} protons despite theoretical expectations for {ital h}{sub 11/2} neutron alignment; the neutron alignment appears significantly delayed. At higher spins, the {sup 117}I and {sup 117}Xe isobars exhibit contrasting forms of band termination.

• OSTI ID: 55123
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 51; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALIGNMENT
COINCIDENCE METHODS
CRANKING MODEL
GAMMA RADIATION
IODINE 117
NEUTRON-DEFICIENT ISOTOPES
PROTONS
QUASI PARTICLES
SPECTROMETERS
WOODS-SAXON POTENTIAL
XENON 116
XENON 117
XENON 118
YRAST STATES