Cross section measurements of the Nb-93(p,gamma)Mo-94 reaction at E-p=1.4-4.9 MeV relevant to the nucleosynthetic p process

In-beam cross section measurements of the Nb-93(p,gamma)Mo-94 reaction have been carried out at E-p = 1.4-4.9 MeV, by using high efficiency high-purity Ge detectors, partly with BGO shields for Compton background suppression. From the resulting cross sections, which lie in the 0.5-300 mub range, astrophysical S factors as well as reaction rates have been obtained. By means of the statistical compound nucleus theory of Hauser and Feshbach, cross sections and reactions rates have also been calculated. A good agreement between the experimental data and the theoretical predictions has been found.