Statistical description of orbiting and fusion

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5889313

Ayik, S; Shivakumar, B; Shapira, D; Harmon, B A

An extension of the diffusion model is proposed for describing the intermediate processes and the compound nucleus formation in heavy ion collisions. The model describes the intermediate processes and fusion in terms of the formation and the evolution of long-lived dinuclear molecular complex (DMC) and its subsequent decay by fragmentation. The colliding ions can be trapped into the pocket of the entrance channel nucleus-nucleus potential and a DMC is formed. This DMC acts as a doorway state towards formation of a completedly equilibrated compound nucleus. It evolves through the exchange of nucleons to different dinuclear configurations. At each stage of its evolution, there is a finite probability to emit fragments into outgoing channels by thermal penetration over the barrier. The doorway states that do not fragment relax into a compound nucleus configuration and are identified as the fusion yield. The model is applied to the analysis of Si + C collisions for which the fusion cross section and the orbiting data are available for a wide range of bombarding energies. 7 refs., 2 figs. (LEW)

• Research Organization: Tennessee Technological Univ., Cookeville (USA); Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5889313
• Report Number(s): CONF-860270-3; ON: DE86008238
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
MATHEMATICAL MODELS
NUCLEAR REACTIONS
ORBITS
SILICON 28 TARGET
STATISTICAL MODELS
TARGETS