Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies

The (92)Mo(alpha, n)(95)Ru, (94)Mo(alpha, n)(97)Ru, and (112)Sn(alpha, gamma)(116)Te cross sections were measured at the upper end of the p-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The (112)Sn(alpha, gamma)(116)T, cross section agrees well with a recently measured thick-target cross section in the same energy range. For the (92,94)Mo(alpha, n) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.Peer reviewe

Excitation function calculations for alpha+Nb-93 nuclear reactions

WOS: 000384872300009In this study, the excitation functions of alpha-induced reactions on the Nb-93 target nucleus were calculated by using ALICE-ASH code. The hybrid model, Weisskopf-Ewing model and geometry dependent hybrid model in this code were used to understand the alpha-niobium interaction. The contribution on the nuclear interaction of compound and pre-compound processes, with variation of the incident alpha particle energy, was presented. Furthermore, the reaction cross sections were calculated by using different level density models such as Superfluid nuclear model, Fermi gas model and Kataria-Ramamurthy Fermi gas model. Obtaining a good agreement between the calculated and the measured cross sections, the exciton numbers and the nuclear level density models were varied. Finally, the proper choice of the exciton numbers and the nuclear level density models was found to be quite important in order to obtain the more realistic cross section values. (C) 2016 Elsevier B.V. All rights reserved