Neutron-deficient N{approx_equal}126 nuclei produced in 238U fragmentation: population of high-spin states

Journal Article · Wed Apr 26 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2200909· OSTI ID:20798514

Podolyak, Zs; Regan, P H; Walker, P M; Pearson, C J; Valiente-Dobon, J J ^[1]; Gerl, J; Hellstroem, M; Becker, F; Gorska, M; Kelic, A; Kopatch, Y; Mandal, S; Schmidt, K -H; Wollersheim, H J; Banu, A; Geissel, H; Grawe, H; Kojouharov, I; Lozeva, R; Portillo, M ^[2]

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1. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)
2. CSI, Planckstrasse 1, D-64291 Darmstadt (Germany)

The population of metastable states produced in relativistic-energy fragmentation of a 238U beam has been measured. For states with high angular momentum, I=17({Dirac_h}/2{pi}) and I=21.5({Dirac_h}/2{pi}), a higher population than expected has been observed, with the discrepancy increasing with angular momentum. By considering two sources for the angular momentum, related to single-particle and collective motions, a much improved description of the experimental results can be obtained. In addition, new results on the structure of 208Fr, 211Ra and 216Ac are reported.

• OSTI ID: 20798514
• Journal Information: AIP Conference Proceedings, Vol. 831, Issue 1; Conference: International conference on frontiers in nuclear structure, astrophysics, and reactions - FINUSTAR, Isle of Kos (Greece), 12-17 Sep 2005; Other Information: DOI: 10.1063/1.2200909; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIUM 216
ANGULAR MOMENTUM
FRANCIUM 208
HEAVY ION REACTIONS
HIGH SPIN STATES
METASTABLE STATES
NUCLEAR FRAGMENTATION
RADIUM 211
RELATIVISTIC RANGE
URANIUM 238