Abstract
The second Born approximation has been applied to calculate the triple and double differential cross sections for ionization of hydrogen atoms by 75keV proton and antiproton impacts. The closure relation is used to perform the summation over the intermediate states in the second Born approximation. The triple differential cross sections (TDCSs) are calculated at different values of scattering angle θs and ejected energy Ee. The double differential cross sections (DDCSs) have been measured as a function of the projectile scattering angle and the electronics eject energy. The calculations are performed for emission of the electron into the collision plane with the ejected energies 16.4, 26.4, 36.4 and 39.4eV. The resulting differential cross sections are compared with experimental and theoretical previous available results.
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