Picture of the nuclei disintegration mechanism - from hadron-nucleus and nucleus-nucleus collisions experimental investigations at high energies

摘要

The mechanism of the nuclei disintegration process in collisions of high- energy hadrons with nuclei is revealed experimentally. The disintegration appears as a complicated nuclear process developing in time and space in intranuclear matter, consisting at least of three stages which last together about 10(sup -24) - 10(sup -17) s after the impact. At the first stage, which lasts about 10(sup -24) - 10(sup -22) s, fast nucleons are densely emitted and the target-nucleus is locally damaged. At the second stage, lasting about 10(sup -22) - 10(sup -1)7 s, the damaged and unstable residual target nucleus uses to evaporate light fragments - mainly nucleons, deuterons, tritons, (alpha) -particles. At the final stage, the residual target-nucleus uses to split sometimes into two or more nuclear fragments. 37 refs.