Abstract

Abstract Gamma-ray angular distributions for transitions in A = 33–44 nuclei, excited in heavy-ion fusion-evaporation reactions, are collected from the literature and reduced to spin-alignment attenuation factors α2 and α4. Phenomenological restrictions for α2 and α4 are investigated. The present data, characterized by Lingraz=9–16, firmly establish α2⩾0 and support 0⩽α4⩽α2. The assumption of a Gaussian shape for the magnetic substate distribution is contradicted by the data.

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