Nonadiabatic transition in the dissociation process from inner valence states of O_2~+

摘要

In a previous paper we reported a study of electronic structures of inner valence states of O_2~+ and the dissociation process from the states,where we succeeded to explain theoretically the general feature of an observed threshold photo-electron spectrum using potential energy curves obtained by second-order configuration interaction (SOCI) calculations,and gave assignments of the inner valence O_2~+ states in the 24-45 eV photon energy region.The calculated potential energy curves have also predicted qualitatively dissociation products from the states given by using threshold photoelectron-photoion coincidence (TPEPICO) spectro-scopy.