Reaction mechanisms involving weakly bound {sup 6}Li and {sup 209}Bi at energies near the Coulomb barrier
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)
The elastic, inelastic, and transfer cross sections are measured for the {sup 6}Li+{sup 209}Bi reaction at energies around the Coulomb barrier. The optical model analysis of elastic scattering shows a breakup threshold anomaly in the energy dependence of the real and imaginary potentials. The observed energy dependence is found to be consistent with the dynamic polarization potential obtained from the coupled-channels calculations that explain the above measured reaction channels simultaneously. A comparison of different reaction probabilities reveals that the relative contribution of breakup starts increasing at energies below the Coulomb barrier, in contrast to the behavior of other reaction channels, which get closed as energy is lowered. The large probability of projectile breakup at sub-Coulomb energies leads to the observation of a nonzero imaginary potential even at E{sub lab}{<=}0.8V{sub B}.
- OSTI ID:
- 21499510
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevC.83.034616; (c) 2011 American Institute of Physics; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dynamic polarization of light halo nuclei in strong fields: {sup 6}He+{sup 209}Bi elastic scattering below and close to the Coulomb barrier
Coulomb breakup effects on the elastic cross section of {sup 6}He+{sup 209}Bi scattering near Coulomb barrier energies
Related Subjects
BISMUTH 209 TARGET
COMPARATIVE EVALUATIONS
COULOMB ENERGY
COULOMB FIELD
COUPLED CHANNEL THEORY
CROSS SECTIONS
ELASTIC SCATTERING
ENERGY DEPENDENCE
INELASTIC SCATTERING
LITHIUM 6 REACTIONS
OPTICAL MODELS
POLARIZATION
PROBABILITY
REACTION KINETICS
TRANSFER REACTIONS
DIRECT REACTIONS
ELECTRIC FIELDS
ENERGY
EVALUATION
HEAVY ION REACTIONS
KINETICS
MATHEMATICAL MODELS
NUCLEAR REACTIONS
SCATTERING
TARGETS