Fragment Spin Orientation Following Deep-Inelastic Scattering

Abstract

Yields of discrete $\ensuremath{\gamma}$ transitions in coincidence with deep-inelastic fragments identified in a particle telescope have been measured as a function of $Q$ value and $Z$ from the scattering of $^{16}\mathrm{O}$ with $^{27}\mathrm{Al}$ at 100 MeV. The anisotropies in the $\ensuremath{\gamma}$-particle angular correlations indicate a high degree of spin alignment in the fragments. This, as well as the deduced value of the internal angular momentum, is consistent with sticking of the fragments prior to scission.