Analysing powers of the 54Fe(He,d)55Co and 54Fe(3He, α)53Fe reactions

Abstract The differential cross sections and analysing powers of the 54 Fe( 3 He, d) 55 Co and 54 Fe( 3 He, α) 53 Fe reactions were measured for strong transitions populating both T and T > states of the final nuclei using a 33 MeV polarized 3 He beam. The sensitivity of the analysing powers to the total angular momentum transfer allowed model-independent determination of spins for all levels observed. The main features of the experimental data could be reproduced satisfactorily by the DWBA formalism only with certain combinations of the optical-model potentials. The analysing power of the indirect transition, when compared with coupled-reaction calculations, show a marked sensitivity to the reaction mechanism.