Identification of yrast high-K intrinsic states in {sup 188}Os

Journal Article · Sun Feb 15 00:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.024310· OSTI ID:21199548

Modamio, V ^[1]; Jungclaus, A ^[1]; Podolyak, Zs ^[2]; Shi, Y; Xu, F R ^[3]; Algora, A ^[4]; Bazzacco, D; Lenzi, S ^[5]; Escrig, D ^[6]; Fraile, L M ^[7]; Marginean, N ^[8]; Martinez, T; Napoli, D R ^[9]; Schwengner, R ^[10]; Ur, C A ^[5]

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1. Departamento de Fisica Teorica C-XI, Universidad Autonoma de Madrid, E-28049 Madrid (Spain)
2. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)
3. School of Physics, Peking University, Beijing 100871 (China)
4. IFIC, CSIC/Universidad de Valencia, E-46071 Valencia (Spain)
5. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy)
6. Instituto de Estructura de la Materia, CSIC, Serrano 113bis, E-28006 Madrid (Spain)
7. Universidad Complutense de Madrid, Madrid (Spain)
8. ''Horia Hulubei'' National Institute for Physics and Nuclear Engineering, Bucharest (Romania)
9. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy)
10. Institut fuer Strahlenphysik, Forschungszentrum Dresden-Rossendorf, D-01314 Dresden (Germany)

The high-spin structure of the Z=76 nucleus {sup 188}Os has been studied using the incomplete fusion reaction {sup 7}Li+{sup 186}W. A K{sup {pi}}=10{sup +} band has been established up to spin (24{sup +}) and its crossing with the ground-state band has been studied. In addition, intrinsic high-K states have been identified and on top of two of them, K{sup {pi}}=7{sup -} and K{sup {pi}}=10{sup -}, regular bands have been observed. The K{sup {pi}}=16{sup +} and K{sup {pi}}=18{sup +} states are yrast whereas the K{sup {pi}}=14{sup +} level lies only 33 keV above the yrast line and decays with a low reduced hindrance of f{sub {nu}}<1.3 to the ground-state band ({delta}K=14). The results are discussed by means of a systematic comparison with the even-even neighboring nucleus {sup 186}Os. Configuration-constrained multiquasiparticle potential-energy-surface calculations have been performed to identify the configurations of multiquasiparticle states.

• OSTI ID: 21199548
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 2; Other Information: DOI: 10.1103/PhysRevC.79.024310; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
CONFIGURATION
DECAY
GROUND STATES
INCOMPLETE FUSION REACTIONS
KEV RANGE
LITHIUM 7
OSMIUM 186
OSMIUM 188
POTENTIAL ENERGY
SPIN
SURFACES
THERMONUCLEAR REACTIONS
TUNGSTEN 186
YRAST STATES