Abstract
Two neglected aspects of rainbow scattering are discussed: (i) monotonously decreasing (repulsive) potentials can sometimes show rainbow effects; (ii) relatively deep potential minima do not necessarily lead to larger rainbow angles mod theta R mod than slightly shallower ones. Thus there exist potentials with one minimum and a repulsive core for which the relationship V1(r)<V2(r) is fulfilled for all r>0 (i.e. mod V1min mod > mod V2min mod ) but which produce rainbow angles with mod theta 1R mod < mod theta 2R mod .