Investigation of the one-neutron transfer in 13C + 28Si at Elab = 30 and 34 MeV
Abstract
Background: Neutron transfer measurements for the 18O + 28Si system have shown that the experimental one-neutron and two-neutron transfer cross sections are well reproduced with spectroscopic amplitudes from two different shell model interactions for the Si isotopes: psdmod for the two-neutron transfer, and psdmwkpn for the one-neutron transfer. Purpose: The origin of this ambiguity can be related to a more complex mechanism in the one-neutron transfer that requires the unpairing of neutrons prior to its transfer in the (18O,17O) reaction. Studying a nucleus where this characteristic is absent (13C) should help to elucidate this question. Method: One-neutron transfer cross sections were measured for the 13C + 28Si at Elab = 30, and 34 MeV, and compared with coupled reaction channel calculations using spectroscopic amplitudes derived from the psdmod and psdmwkpn shell model interactions. Results: The spectroscopic amplitudes from the psdmod interaction for the relevant states in 29Si provide a good description of the experimental data and the corresponding values agree with previous estimates obtained from the (d,p) reaction. Conclusions: The experimental data for the one-neutron transfer to 28Si induced by (13C,12C) reaction is well reproduced using spectroscopic amplitudes from the psdmod.