Correlated sources of heavy fragments in the Kr+Au reaction at 35 and 44 MeV/u

Coincidences between fragments (z=8-36, theta=3-30°) emitted in the Kr + Au reaction at 35 and 44 MeV/u have been measured. On the basis of final-state interactions, the coincidence events can be divided into two distinct groups. In one group, products with near beam velocity are identified with the remaining part of the projectile; they are detected in coincidence with much slower fragments emitted by the target or by a hot zone common to the projectile and the target. The fragments of the second group have intermediate velocity and may be emitted by a much slowed-down projectile.