Fusion of the positive Q-value system {sup 36}S+{sup 48}Ca well below the Coulomb barrier

Journal Article · Wed Oct 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.044607· OSTI ID:21192318

Stefanini, A M; Silvestri, R; Corradi, L; Fioretto, E; Guiot, B ^[1]; Montagnoli, G; Beghini, S; Mason, P; Scarlassara, F ^[2]; Courtin, S; Haas, F; Lebhertz, D ^[3]; Marginean, N ^[4]; Sagaidak, R N ^[5]; Szilner, S ^[6]

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1. INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova) (Italy)
2. Dipartimento di Fisica, Universita di Padova, and INFN, Sezione di Padova, I-35131 Padova (Italy)
3. IPHC, CNRS-IN2P3, Universite Louis Pasteur, F-67037 Strasbourg Cedex 2 (France)
4. Horia Hulubei National Institute, Bucharest (Romania)
5. Flerov Laboratory of Nuclear Reactions, JINR, Dubna (Russian Federation)
6. Ruder Boskovic Institute, HR-10002 Zagreb (Croatia)

The fusion excitation function of {sup 36}S+{sup 48}Ca has been measured from well above the barrier down to very small cross sections at sub-barrier energies. A steady decrease of the fusion cross sections is observed below the barrier with no pronounced change of slope. The logarithmic derivative saturates and does not reach the value expected for a constant astrophysical S-factor. The S-factor does not show any maximum in the measured energy range. Coupled-channels calculations using a Woods-Saxon potential have been performed.

• OSTI ID: 21192318
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 78, Issue 4; Other Information: DOI: 10.1103/PhysRevC.78.044607; (c) 2008 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
ASTROPHYSICS
CALCIUM 48
COULOMB FIELD
COUPLED CHANNEL THEORY
ENERGY RANGE
EXCITATION FUNCTIONS
NUCLEAR REACTIONS
Q-VALUE
SIMULATION
SULFUR 36
THERMONUCLEAR REACTIONS
WOODS-SAXON POTENTIAL