This is the name given to the fact that electrons with energy about 1 eV can pass almost freely through Xe, Kr, and Ar:- there is a sharp minimum in electron scattering cross-section for these noble g...This is the name given to the fact that electrons with energy about 1 eV can pass almost freely through Xe, Kr, and Ar:- there is a sharp minimum in electron scattering cross-section for these noble gases. Due to polarization of these atoms by the incoming electron the potential appears to increase as K increases (more localized electrons are better able to polarise the atom). The maximum in the Ar cross section at about 13 eV is mainly due to the d-wave δ2=π/2.
