Optical model analysis for /sup 16/O + /sup 208/Pb: Evidence for dynamic shape or density changes

Journal Article · Thu Nov 01 04:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.20.1731· OSTI ID:5725646

Delagrange, H; Vaz, L C; Alexander, J M

For the reaction /sup 16/O + /sup 208/Pb, experimental data are available for cross sections for complete fusion and all reactions from 80 --102 MeV and for elastic scattering from 80 to 313 MeV. Most of these data can be adequately described by an energy-independent spherical optical potential with the proximity formulation for the real part and a Woods-Saxon form for the imaginary part. Three parameters have been varied, radius and surface width in the proximity potential and radius in the imaginary potential. The sum of the equivalent sharp radii of the interacting nuclei must be enlarged significantly in order to fit the fusion and scattering data. As a consequence, the sum of the ''best fit central radii'' for /sup 16/O and /sup 208/Pb is approx. = 0.8 fm larger than the sum of the independently measured radii. If the proximity formulation is correct this implies dynamical shape or density adjustments during the collision.

• Research Organization: Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 5725646
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651915* -- Nuclear Properties & Reactions
A=190-219
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
ELASTIC SCATTERING
ENERGY RANGE
FUSION REACTIONS
HEAVY ION REACTIONS
LEAD 208 TARGET
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
OPTICAL MODELS
OXYGEN 16 REACTIONS
POTENTIALS
SCATTERING
TARGETS
WOODS-SAXON POTENTIAL