Chemical Physics Letters, Vol.320, No.3-4, 217-221, 2000
Partial electron yield spectrum of N-2: doubly excited states at the K-shell threshold
The partial electron yield spectrum of N-2 has been measured at a kinetic energy corresponding to the Auger decay of doubly excited core-hole states. The spectrum reveals previously unresolved double excitations just below and above the K-shell ionization threshold. Their excitation energies and dissociative nature agree with calculated potential energy curves of the doubly excited states.