Nuclear effects in deep inelastic scattering of polarized electrons off polarizedHe3and the neutron spin structure functions

It is shown that the nuclear effects playing a relevant role in deep inelastic scattering of polarized electrons by polarized ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ are mainly those arising from the effective proton and neutron polarizations generated by the S’ and D waves in ${}_{}{}^3{}_{}{}^{}\mathrm{He}$. A simple and reliable equation relating the neutron ${\mathit{g}}_1^{\mathit{n}}$, and ${}_{}{}^3{}_{}{}^{}\mathrm{He}$, ${\mathit{g}}_1^3$, spin structure functions is proposed. It is shown that the measurment of the first moment of the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ structure function can provide a significant check of the Bjorken sum rule.