Alpha spectroscopic factors for 6 Li , 7 Li , 9 Be and 12 C from the ( ~ p , pα ) reaction at 296 MeV

Three-body breakup cross sections and analyzing powers for the Li, Li, Be and C(~ p, pα) reactions were measured at an incident energy of 296 MeV. Data were analyzed using the plane wave impulse approximation (PWIA) and the distorted wave impulse approximation (DWIA) and compared with previous studies. DWIA calculations reproduce shapes of projected spectra and analyzing power distributions fairly well with the exception of the C(~ p, pα)Be reactions. Extracted spectroscopic factors for Li, Be and C are larger than those found in the previous studies. In contrast, extracted spectroscopic factors for Li agree with the previous work. This work suggests that the spectroscopic factor for Li is ∼ 0.8, independent of incident energies and reaction types. c © 1998 Elsevier Science B.V.