Vector correlations in dissociative photoionization of diatomic molecules in the VUV range: Strong anisotropies in electron emission from spatially oriented NO molecules

Imaging and time-resolved coincidence techniques are combined to determine ion-electron (<(nu)over right arrow>i, <(nu)over right arrow>(e)) velocity correlations in dissociative photoionization of diatomic molecules induced by synchrotron linearly polarized light (P) over right arrow. The (<(nu)ove r right arrow>(i),<(nu)over right arrow>(e),(P) over right arrow) vector co rrelation yields the identification of each process, together with the (the ta(e), phi(e)) electron emission in the molecule frame for each orientation of the internuclear axis with respect to the polarization. Strong electron emission anisotropies are observed in the NO molecule frame for the parall el and the perpendicular transitions of the NO + h nu(22-25 eV) --> NO+(c(3 )Pi) + e --> N+(P-3) + O(P-3) + e reaction.