Four-nucleon pickup reaction on 12 ⩽ A ⩽ 94 nuclei

Abstract The differential cross sections for the (d, 6 Li) reaction on targets of 12 C, 16 O, 24 Mg, 40 Ca, 58 Ni and 94 Mo have been measured at E d = 54.2 MeV. The measured angular distributions have been analyzed by finite-range DWBA calculations, and spectroscopic factors for an α-cluster transfer have been extracted. In the DWBA analysis using an optical model with a phenomenological Woods-Saxon potential, the spin-orbit part of the deuteron optical potential played a significant role in reproducing the measured angular distributions but the spin-orbit part of the 6 Li optical potential had a minor effect. Relative spectroscopic factors extracted from the present data were compared with theoretical predictions together with the results from the (p, pα) reaction. The relative spectroscopic factors for 1p-shell nuclei were in quantitative agreement with theoretical predictions. However, there were certain discrepancies between the spectroscopic factors extracted from the (d, 6 Li) reaction and those from the (p, pα) reaction, and the discrepancies increased with target mass number.