Investigating the effect of electric field on ionization cross sections in antiproton-hydrogen/deuterium atoms collisions

The Classical Trajectory Monte Carlo (CTMC) method has been used to investigate the effects of aligned electric field on the ionization cross sections in antiproton and hydrogen atoms collisions. The cross sections for the ionization of hydrogen/deuterium collision with antiproton in the energy range 10-500 keV/amu have been calculated and compared with the available experiment and theoretical results. The ionization cross sections are in reasonable agreement with the recently reported experimental and theoretical results. Isotope effect in the ionization cross section is reported to be negligible. The effects of the external electric field are seen to be quite prominent. Differential cross sections for ionization at the scattering angle up to 0.1° are also reported in this paper.