Search for incomplete deep inelastic collision

Abstract

The relevance of a reaction mechanism involving projectile break-up or fragmentation followed by a dissipative interaction of one of the remnants with the target is discussed. This type of reaction mechanism is commonly refered to as incomplete deep inelastic collisions (INDIC). Details of an experimental study of the system ²⁰Ne + ²⁷Al at 10.8 MeV/u are given. In this study light particle detectors were fixed at forward angles and the complete distribution of the associated projectile-like fragments were measured. As INDIC with neon projectiles are expected to occur via break-up into Oxygen and an α-particle, reactions involving the emission of a fast α-particle in coincidence with a deep inelastic projectile-like fragment provide an estimate for the cross section for INDIC. From this measurement an upper limit of 100 mb is estimated.