Measurement of inclusive quasielastic scattering of polarized electrons from polarizedHe3

Abstract

We report a measurement of the asymmetry in spin-dependent quasielastic scattering of longitudinally polarized electrons from a polarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ gas target. This measurement represents the first demonstration of a new method for studying electromagnetic nuclear structure: the scattering of polarized electrons from a polarized nuclear target. The measured asymmetry is in good agreement with a Faddeev calculation and supports the picture of spin-dependent quasielastic scattering from polarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ as predominantly scattering from a polarized neutron.