Electron impact single and double ionization of Fe atom: PACS. 34.80 Dp Atomic excitation and ionization by electron impact

Abstract

Theoretical calculations of electron impact single and double ionization cross sections for ground state Fe  atoms have been performed in the binary encounter approximation(BEA) in the energy region ranging from threshold  to 1250 eV and 1200eV respectively. The accurate expression for  (cross section for energy transfer ) including exchange and interference as given by Vriens and Hartree –Fock velocity distributions for the target electrons have been used throughout the calculations.