Three-body dynamics and channel distortions in direct nuclear reactions

摘要: Starting from an exact three-body formulation of nuclear rearrangement, inclastic and break-up processes, we develop operator reduction procedure the equations, by which components implicit channels—channels different initial final ones—are formally eliminated. This allows us to introduce in a simple way distorted-wave approximation scheme involving generalized transition potentials, take account also contributions channels. In order facilitate comparison between this DWBA, recast former one alternative form, DWBA appear explicitly separated additional ones. The importance these latter is discussed. As far as rearrangement processes are concerned, it shown that polar- triangular-diagram mechanism contributions—contained potential—sum up give, interesting practical cases, DWBA.