Identification of the two-electron one-photon transition in Eu III in electron-atom collisions
Goldovskii V.L. , Shimon L.L., Zapesochnyi I.P. , Solomon A.M.
The formation of a double 5p vacancy in an europium atom and the emission of a single photon (λ = 68.3 nm) in the course of filling this vacancy by 5s-and 6s-subshell electrons is first identified.