Factorization of the cross section for the 12C(p,pα) 8Be(g.s.) reaction at an incident energy of 100 MeV
Cross sections and analyzing powers forthe reaction 12C(p,pa) 8Be at an incident energy of 100 MeV, measured over a range of quasifree scattering angle pairs, are compared with elastic scattering of protons from 4He. Remarkable agreement between angidar distributions of the two sets of data, presented as a function of the scattering angle in the two-body centre-of mass, is found. Thus the a-cluster reacts to the projectile just Uke a free particle. © 2009 American Institute of Physics.