Spin structure of the 3 He from the dd → 3 He n reaction

The polarization observables in the reaction dd → 3 He n are considered. Their high sensitivity to the 3 He wave function at short distances is shown. Using of both polarized target and beam allows to extend sufficiently the number of possible experiments and to separate 3 He structure from the reaction mechanisms using different relative orientations of initial deuterons spins. 27 refs., 5 figs