| Popis: |
A finite expansion for the scattering of a structureless projectile from a complex target of A particles is presented. This development is given as a spectator expansion, in the sense that the first term represents the scattering of the projectile from single target constitutent particles, with all other target particles playing a passive role (i.e., acting as spectators). Similarly, the second term represents the scattering from pairs of target particles with (A-2) spectators, and so on. It is demonstrated that such expansions, one of which has been obtained previously as a resummation of the multiple scattering series, are very general in nature and obtain under circumstances for which the standard multiple scattering treatment is not valid. |
