Quasi-free stripping reactions — extended serber model (II)

Abstract

We examine the validity of the model wave functions used in the extended Serber model for 4He, 7Li, 12C, and 20Ne projectiles. It is shown that with a properly chosen truncation radius, truncated Yukawa wave functions reproduce the cluster momentum distributions obtained with microscopic wave functions. Thus, the basic concept, i.e., the quasi-free stripping mechanism involved in the original Serber model has been extended to complex projectiles. Applications of the extended Serber model to formation of beam-velocity fragments are presented, including 22Ne induced reactions at 20 MeV/nucleon and the bombarding energy dependence of the momentum width in 20Ne- and 14N-induced reactions. The complexity of the peripheral nucleus-nucleus collisions in the Fermi energy domain is discussed.