Alpha spectroscopic factors for 6Li, 7Li, 9Be and 12C from the ( [formula omitted], pα) reaction at 296 MeV

Abstract

Three-body breakup cross sections and analyzing powers for the 6Li, 7Li, 9Be and 12 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 12 C( p,pα) 8 Be reactions. Extracted spectroscopic factors for 6Li, 9Be and 12C are larger than those found in the previous studies. In contrast, extracted spectroscopic factors for 7Li agree with the previous work. This work suggests that the spectroscopic factor for 6Li is ∼ 0.8, independent of incident energies and reaction types.