Hyperdeformed Shapes and Jacobi Transitions in 126Ba

Journal Article · Fri Feb 27 04:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1691723· OSTI ID:20632992

Herskind, B; Hagemann, G B; Sletten, G; Doessing, Th; Roenn Hansen, C; Oedegaard, S ^[1]; Huebel, H; Bringel, P; Buerger, A; Neusser, A; Singh, A K; Al-Khatib, A; Patel, S B ^[2]; Bracco, A; Leoni, S; Camera, F; Benzoni, G; Mason, P; Paleni, A; Million, B ^[3]

---

1. Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Oe (Denmark)
2. ISKP, University of Bonn, Nussallee 14-16, D53115 Bonn (Germany)
3. Dipartemento di Fisica, Universita di Milano (Italy) and INFN (Italy); and others

Systematic searches for exotic shapes, hyperdeformation (HD) and Jacobi transitions, have been made in Hf, Nd, Ba, Xe, Sn and Cd nuclei during the last 4 years, guided by theoretical predictions. The most promising results showing patterns of rotational correlations (e.g. 2. order ridges of multiple rotational bands) are found for 126Xe and 126Ba when the very highest multiplicity cascades are selected by various techniques. In particular, the results on 126Ba obtained in 3 different experiments, using both Gammasphere in Berkeley and Euroball IV in Strasbourg are discussed and compared to theoretical predictions and to simulations by a double-potential statistical model for population and {gamma}-decay. A very surprising result was obtained in the last experiment at Euroball, in a full month running time, namely that the observed ridge structure depends very sensitively on the bombarding energy, which points to entrance channel effects. The analysis shows that a discrete HD yrast band intensity will be significantly less than 1 part in 106 of the strongest bands populated in the reaction.

• OSTI ID: 20632992
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 701; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARIUM 126
COMPUTERIZED SIMULATION
CORRELATIONS
DEFORMED NUCLEI
ENERGY-LEVEL TRANSITIONS
FORECASTING
GAMMA DECAY
GIANT RESONANCE
HEAVY ION FUSION REACTIONS
HIGH SPIN STATES
INDIUM 106
MONTE CARLO METHOD
MULTIPLICITY
NUCLEAR POTENTIAL
ROTATIONAL STATES
SCATTERING
STATISTICAL MODELS
XENON 126