Study of fusion cross-section and astrophysical S-factor for p+15N and α+12C at sub-barrier energy.

Nuclear fusion reactions at low energies (E ∼ 1 eV to few KeV) are crucial for the primordial nucleosynthesis of light elements. Nuclear fusion reactions in this energy window can be understood fruitfully in terms of quantum mechanical tunneling through the mutual Coulomb barrier of interacting nuclei. In this work, we studied the fusion cross-section, σ and astrophysical S-factor in the selective resonant tunneling model (SRTM) approach for the p + 1 5 N and α + 1 2 C nuclear fusion reactions. We used space varying complex Gaussian type nuclear potential here. The quantum mechanical findings of the fusion cross-section, σ and S-factor are in excellent agreement with the experimentally observed results found in the literature. The improved value of astrophysical S-factors for light nuclei may give a more clear picture of the elemental abundance in primordial nucleosynthesis. [ABSTRACT FROM AUTHOR]

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