Semiclassical particle-rotor model of one-neutron transfer reactions

We present a model of one-neutron transfer reactions appropriate for cases in which one of the collision partners is deformed. The model considers rotational excitation due to the Coulomb field in the entrance channel, neutron transfer between the two nuclear surfaces at the distance of closest approach, and additional rotational excitation in the final channel. The Coulomb excitation processes are described within the sudden-limit approximation using classical-limit theory, and the transfer is described in terms of spectroscopic amplitudes obtained with the particle-rotor model. We have applied this model of transfer to the [sup 58]Ni+[sup 161]Dy and [sup 116]Sn+[sup 161]Dy one-neutron pickup reactions, cases for which data are available. The calculations indicate that transfer into both ground and two-quasiparticle excited bands takes place and that the distribution of population in the ground band and two-quasiparticle states is in reasonable agreement with the data.