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Heavy-ion near-barrier fusion reactions; depth and diffuseness of Woods–Saxon potential; coupled channel equations; diffuseness anomaly.

Limitations of the static Woods–Saxon potential and the applicability of the energy dependent Woods–Saxon potential (EDWSP) model within the framework of one-dimensional Wong formula to explore the sub-barrier fusion data are highlighted. The inelastic surface excitations of the fusing nuclei are found to be dominating in the enhancement of sub-barrier fusion excitation function data and the effects of such dominant vibrational states are exploited through the coupled channel calculations obtained by using the code CCFULL. It is worth mentioning here that the influence of multiphonon vibrational states of the reactants can be simulated by introducing the energy dependence in the nucleus–nucleus potential.

GAUTAM MANJEET SINGH¹

1. School of Physics and Material Science, Thapar University, Patiala 147 004, India

Published

16 May 2016

Manuscript received

9 January 2015

Manuscript revised

14 April 2015

Accepted

11 May 2015

Early published

23 January 2016