Interference effect in e-emission spectrum from a molecular (N2) double slit in collisions with fast electrons

Double differential cross sections (DDCS) of electrons ejected in ionization of N2 by fast electrons have been measured. Signature of interference effect was revealed in the DDCS ratio (N2/2N). Interference oscillation was also confirmed from the asymmetry parameter, determined from the DDCS of two complementary angles. Traces of second order effect was also observed from the asymmetry parameter.