Radiative strength functions for dipole transitions in 90Zr

Partial cross sections for the (p, γ) reaction on the ⁸⁹Y nucleus that were measured previously at proton energies between 2.17 and 5.00 MeV and which were averaged over resonances were used to determine the absolute values and the energy distribution of the strength of dipole transitions from compound-nucleus states to low-lying levels of the ⁹⁰Zr nucleus. The data obtained in this way were compared with the predictions of various models.