Reactions between complex nuclei. The frontier between complete fusion and other dissipative collisions

In a first part, we discuss the distinction between complete fusion followed by the compound nucleus decay and incomplete fusion due to massive transfers. In the second part, we analyse the origin of fission-like products resulting from the disruption of a long-life intermediate system. Forl-waves corresponding to a rotating liquid drop fission barrier equal to zero, a quasi fusion process occurs which leads finally to characteristics very similar.