Fusion of {sup 48}Ca+{sup 48}Ca Far Below the Barrier

Journal Article · Wed Aug 26 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232119· OSTI ID:21322854

Scarlassara, F; Montagnoli, G; Mason, P ^[1]; Stefanini, A M; Silvestri, R; Corradi, L; Fioretto, E; Guiot, B ^[2]; Courtin, S; Haas, F; Lebhertz, D ^[3]; Szilner, S ^[4]

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1. Dipartimento di Fisica 'G. Galilei', Universita di Padova and INFN Sezione di Padova, via Marzolo 8, I-35231 Padova (Italy)
2. INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova) (Italy)
3. IPHC, CNRS-IN2P3, Universite de Strasbourg, F-67037 Strasbourg Cedex 2 (France)
4. Ruder Boskovic Institute, HR-10002 Zagreb (Croatia)

In recent years, a puzzling pattern has been observed in fusion cross sections well below the Coulomb barrier, characterized as a departure from the exponential-like behavior predicted by standard coupled-channels models, known as fusion hindrance. We report on recent fusion measurements performed at the Laboratori Nazionali di Legnaro, in particular the {sup 48}Ca+{sup 48}Ca reaction down to the level of 0.6 {mu}b. Unlike most recent results in this field, we do not observe the typical divergent behavior of the logarithmic derivative; but rather a sort of saturation, albeit at a larger value than predicted with a standard nucleus-nucleus potential.

• OSTI ID: 21322854
• Journal Information: AIP Conference Proceedings, Vol. 1165, Issue 1; Conference: International conference on nuclear structure and dynamics '09, Dubrovnik (Croatia), 4-8 May 2009; Other Information: DOI: 10.1063/1.3232119; (c) 2009 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
CALCIUM 48 REACTIONS
CALCIUM 48 TARGET
COULOMB FIELD
COUPLED CHANNEL THEORY
CROSS SECTIONS
HEAVY ION FUSION REACTIONS
NUCLEON-NUCLEON POTENTIAL