Elastic and inelastic scattering of 40 eV electrons from atomic lead

Abstract

Differential and integral electron impact cross sections for elastic scattering and for the excitation of the first five states in lead have been determined at 40 eV impact energy. The cross section measurements were placed on the absolute scale by normalizing to the optical f-value of the 6p7s³P₁ transition which is the upper state for the 7229 AA, 4057 AA and 3639 AA laser emissions. The integral cross sections for elastic scattering (6p^{2 3}P₀) and for the excitation of the 6p^{2 3}P₁, 6p^{2 3}P₂, 6p^{2 1}D₂, and 6p7s ³P₀(+6p7s³P₁) states are: 44, 0.15, 1.5, 0.05 and 8.4*10^-16 cm² respectively.