Abstract. An activity of 158Eu was produced by an (n, p) reaction in an enriched gadolinium target by means of 14 MeV neutrons obtained from a SAMES generator. The gamma radiation accompanying the beta decay of 158Eu into ~SSGd was detected by means of a Ge(Li) spectrometer. A 24-level decay scheme was devised and the transition probabilities were analyzed in terms of adiabatic theory and in terms of the theories including band mixing effects. The values of beta radiation intensities obtained from the experiment were compared with theoretical predictions calculated on the basis of the Nilsson model.