Cross section measurements of proton capture reactions relevant to the p process: The case of ⁸⁹Y(p,γ)⁹⁰Zr and ^121,123Sb(p,γ)^122,124Te

The cross sections of the 89Y(p,γ)90Zr and the 121,123Sb(p,γ)122,124Te reactions were determined from γ-angular distribution measurements at beam energies from 1.6 to 3.4 MeV. In addition, angle-integrated cross sections were also measured at Ep=2, 3, 4, and 4.8 MeV for the 89Y(p,γ)90Zr reaction using the 4π γ-summing method. Astrophysical S factors and reaction rates were deduced from the measured cross sections. Statistical model calculations were performed using the nuclear-reaction code Talys. The results from the comparison between theory and experiment are discussed in detail.