First observation of excited states in {sup 114}Cs: Spectroscopy of the yrast {nu}(h{sub 11/2})x{pi}(h{sub 11/2}) band

Journal Article · Thu Jun 15 04:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.061303· OSTI ID:20771570

Smith, J F; Fletcher, A M; Durell, J L; Freeman, S J; Lisle, J C; Patel, D ^[1]; Chiara, C J ^[2]; Carpenter, M P; Davids, C N; Janssens, R V.F.; Kondev, F G; Seweryniak, D ^[3]; Chantler, H J; Paul, E S ^[4]; Fossan, D B; Koike, T; LaFosse, D R; Starosta, K ^[2]; Reviol, W; Sarantites, D G ^[5]

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1. Schuster Laboratory, University of Manchester, Manchester M13 9PL (United Kingdom)
2. Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States)
3. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE (United Kingdom)
5. Department of Chemistry, Washington University, St. Louis, Missouri 63130 (United States)

Excited states have been observed for the first time in the very neutron-deficient {sub 55}{sup 114}Cs{sub 59} nucleus. The assignment to {sup 114}Cs was made by detecting {gamma} rays in coincidence with evaporated charged particles and with recoiling evaporation residues. A rotational band has been observed up to spin 21({Dirac_h}/2{pi}) (tentatively 25({Dirac_h}/2{pi})). Excitation-energy systematics and a study of quasiparticle alignments suggest that the band is based on the {nu}(h{sub 11/2})x{pi}(h{sub 11/2}) configuration. Unlike bands based on this configuration in heavier cesium isotopes, only one signature partner is observed, and there is no evidence for signature inversion. These observations agree with theoretical calculations which predict that Coriolis-induced signature splitting should dominate at N=59.

• OSTI ID: 20771570
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CESIUM 114
CHARGED PARTICLES
EVAPORATION MODEL
EXCITATION
GAMMA RADIATION
GAMMA SPECTROSCOPY
NEUTRONS
ROTATIONAL STATES
SPIN
YRAST STATES