Chiralities in double photoionization of rotating linear molecules - art. no. 052702

In this paper we investigate the existence and study the properties of line ar dichroism and of circular dichroism in a linear, achiral molecule throug h a process in which absorption of a single photon results in the simultane ous ejection of two electrons. The two dichroic effects are found to provid e complementary information about molecular double photoionization and poss ess very different properties. Dependence of such chiralities on nuclear ro tation has properly been studied by using parity-adapted states to represen t the target molecule and its doubly charged residual photoion. The discuss ion presented is independent of any dynamical models. Both magnitude and be havior of the linear as well as circular dichroisms have phenomenologically been calculated for double photoionization in a sigma (2)(g) shell of a D- proportional toh molecule rotating in its (1)Sigma (+)(g) electronic state.