Quasifree scattering in the 6Li(α, 2α) 2H reaction at Eα between 77 and 119 MeV

Abstract

The 6Li(α, 2α) 2H breakup reaction has been measured at E α = 77−119 MeV in coplanar, symmetric geometry. The projected energy spectra of the 2α correlation maps on the E 1 axis were obtained and analyzed with DWIA and PWIA calculations. The positions of the quasifree-scattering peaks are well reproduced by both calculations, which at the higher incident energies reproduced well the widths of the experimental peaks. At lower energies, the widths obtained from the DWIA calculation are wider than those observed. Spectroscopic factors, S αd , for breakup into α + d deduced from the DWIA calculation averaged 0.58. Effective numbers of α-clusters, N eff, deduced from the PWIA calculation averaged 0.22.