Gamma radiation angular distribution in the (n,n'γ) reaction on 91Zr

A γ-ray spectrum from the (n,n'γ) reaction on 91Zr has been measured by a Ge(Li) spectrometer. A scheme of γ-transitions is constructed. Angular distributions of most intensive γ-radiations are measured. The values of multipole mixtures in the 91Zr γ-transitions are determined. 49 lines of 91Zr have been discriminated in the γ-spectrum measured up to 3.5 MeV, 22 lines of them have been observed for the first time. The angular momenta 11/2, 7/2 and 7/2 have been determined unambiguously from the data on the angular distributions for the 2170.0, 2200.5 and 2693.6 keV levels. The results obtained are plotted and tabulated