Symmetric splitting for the system /sup 32/S+/sup 238/U at energies near and below the barrier

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.35.2097· OSTI ID:5943362

Freifelder, R; Braun-Munzinger, P; DeYoung, P; Schicker, R; Sen, S; Stachel, J

The total capture cross section for the system /sup 32/S+/sup 238/U has been measured at energies from 0.93 to 1.08 times the s-wave interaction barrier by detecting coincident fission fragments following full momentum transfer reactions. The subbarrier cross section cannot be reproduced by a one-dimensional barrier penetration model. Using a quantum mechanical coupled channels model, good agreement is obtained. The measured angular distributions of fission fragments were compared to the predictions of saddle and scission point transition state theory. Saddle point transition state model calculations fail to reproduce the data, while scission point transition state calculations are in agreement with their qualitative trend. Evidence for nonequilibrium processes is presented.

• Research Organization: Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 5943362
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CAPTURE
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DISTRIBUTION
FISSION FRAGMENTS
HEAVY ION REACTIONS
MOMENTUM TRANSFER
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
SULFUR 32 REACTIONS
TARGETS
URANIUM 238 TARGET