Competition Between Dynamical and Sequential Reaction Channels in 197Au+197Au Collisions at a Bombarding Energy of 23A MeV

摘要

Competition between the two reaction channels: sequential breakup and neck fragmentation has been studied in peripheral and semi-peripheral collisions of the 197Au+197Au system at bombarding energy of 23A MeV. It was found that the emission of heavy (A 50) neck-originating fragments occurs in about 22% of ternary breakup events, making this reaction channel highly competitive with the sequential breakup of the projectile- or target-like fragment (78% of events).