Background: Neutron transfer measurements for the 18 O + 28 Si 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 ( 18 O, 17 O) reaction. Studying a nucleus where this characteristic is absent ( 13 C) should help to elucidate this question.Method: One-neutron transfer cross sections were measured for the 13 C + 28 Si at E lab = 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 29 Si 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 28 Si induced by ( 13 C, 12 C) reaction is well reproduced using spectroscopic amplitudes from the psdmod. * rlinares@id.uff.br 1

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In this contribution, we present first experimental results for the deuteron pickup transfer in the 16O+28Si system at E lab. = 240 MeV. This reaction populates states in the 26Al target-like nucleus. In the same experimental campaign we have also measured the one-proton transfer 28Si(16O,17F)27Al and one-neutron transfer 27Al(16O,17O)26Al at the same beam energy. Comparison between the energy spectrum of these transfer reactions indicate that: i) the one-proton and one-neutron transfers favor the population of the low-lying states; ii) deuteron transfer to the ground state in 26Al is highly suppressed; iii) the cross-sections for deuteron transfer that populates low-lying states in 26Al are roughly 3 times less than the one-neutron transfer.

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