https://doi.org/10.1140/epja/s10050-019-00009-7
Regular Article –Theoretical Physics
Extended quantum diffusion approach to reactions of astrophysical interests
1
Joint Institute for Nuclear Research, 141980, Dubna, Russia
2
Institut für Theoretische Physik der Justus–Liebig–Universität, 35392, Giessen, Germany
3
Tomsk Polytechnic University, 634050, Tomsk, Russia
* e-mail: adamian@theor.jinr.ru
Received:
2
September
2019
Accepted:
26
October
2019
Published online:
23
January
2020
The quantum diffusion approach is extended to low-energy fusion (capture) reactions of light- and medium-mass nuclei. The dependence of the friction parameter on bombarding energy is taken into account. A simple analytic expression is obtained for the capture probability at extreme sub-barrier energies. The calculated cross-sections are in good agreement with the experimental data. The fusion excitation functions calculated within the quantum diffusion and WKB approaches are compared and presented in the astrophysical S-factor representation.
© Società Italiana di Fisica (SIF) and Springer-Verlag GmbH Germany, part of Springer Nature, 2020
