EPJ Web of Conferences
Volume 17, 20115th International Conference FUSION11
|Number of page(s)||4|
|Section||Session 3 Chairperson - Kailas S.|
|Published online||19 October 2011|
Coupled channel effect in elastic scattering and fusion for 6,7Li+28Si
Nuclear Physics Division, Saha Institute of Nuclear
Physics, Kolkata - 700064, INDIA
2 R.K. Mission Vivekananda University, Belur Math, Howrah - 711202, INDIA
3 Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai - 400085, INDIA
4 Departamento de Fìsica Aplicada, Universidad de Huelva, E-21071 Huelva, SPAIN
5 Inter-University Accelerator Centre, New Delhi - 110067, INDIA
The fusion excitation and elastic angular distribution were measured for 6,7Li+28Si from below to above Coulomb barrier (≤ 3Vb) energies. The barrier distribution derived from the fusion data was found to be broad and asymmetric at the sub-barrier region, compared to 1D BPM estimation. Effect of rotational coupling on fusion was found to be not so dominant. Phenomenological optical potential parameters, with surface and volume type imaginary potentials, were obtained from f tting of elastic scattering data and energy dependence of real and imaginary surface strengths were investigated around the barrier. CDCC calculations considering only breakup of projectile were performed for 6,7Li+28Si with the elastic scattering data, using the code FRESCO. The effects of breakup of projectile on elastic cross section do not agree with the energy dependence of real and imaginary strength with volume type imaginary potential around the barrier.
© Owned by the authors, published by EDP Sciences, 2011
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