Conversion Electrons from (α,xn)Reactions on Sm Isotopes and Nuclear Structures of Gd Nuclei

Abstract

Conversion electrons following 150,152,154 Sm(α, x n ) 150∼156 Gd reactions were measured at 40 and 36 MeV alpha energies. The ground-state band transitions up to spins I ≈12 in the 154 Gd nuclei and a number of prominent transitions in odd mass Gd nuclei were observed.The measurement of the anisotropy was made for the conversion electrons of the ground-state band transitions in the 154 Gd, and the the spin alignment of the ground-state band levels was obtained. The intensities and the angular distributions of the conversion electrons are discussed in terms of the reaction mechanism and the nuclear model.