Influence of complex surface vibrations on the fusion of [sup 58]Ni+[sup 60]Ni

Journal Article · Mon Feb 06 04:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.864· OSTI ID:6851964

Stefanini, A M; Ackermann, D; Corradi, L; Napoli, D R; Petrache, C; Spolaore, P; Bednarczyk, P; Zhang, H Q ^[1]; Beghini, S; Montagnoli, G; Mueller, L; Scarlassara, F; Segato, G F; Soramel, F ^[2]; Rowley, N ^[3]

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1. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova (Italy)
2. Dipartimento di Fisica, Universita di Padova and Istituto Nazionle di Fisica Nucleare Sezione di Padova, I-35131, Padova (Italy)
3. Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom) Department of Physics, University of Surrey, Guildford GU2 5XH (United Kingdom)

Fusion-evaporation cross sections for [sup 58]Ni+[sup 60]Ni have been measured with high accuracy in the energy range around the Coulomb barrier. The data yield an experimental distribution of fusion barriers'' around 13 MeV wide, which displays structure characteristic of strong phonon couplings with two large well resolved'' peaks, and a smaller peak at lower energies, which is essential for fitting the low-energy cross section. This is obtained only when the target and projectile double-phonon excitations are taken into account. This is the first time that such complex surface vibrations have been identified in a fusion experiment.

• OSTI ID: 6851964
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 74:6; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
COULOMB FIELD
CROSS SECTIONS
ELECTRIC FIELDS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVAPORATION
EXCITATION
EXCITED STATES
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
NICKEL 58 REACTIONS
NICKEL 60 TARGET
NUCLEAR REACTIONS
PHASE TRANSFORMATIONS
PHONONS
QUASI PARTICLES
SURFACES
TARGETS
VIBRATIONAL STATES