Momentum Transfer Dependence Of Fully Differential Cross Sections For 16 MeV O⁷⁺ Impact Ionization Of Helium

The modified-Coulomb-Born with internuclear interaction（MCB-PT）model is used to calculate fully differential cross section（FDCS）for helium single ionization by 16 MeV O⁷⁺ impact in the scattering plane.Comparisons are made with experimental data and other theories from the four-body coulomb wave（4CW）and the continuum distorted-wave eikonal-initial-state with internuclear interaction（CDW-EIS-PT）.We find that angular location of the binary peak is in good agreement with experiment at intermediate momentum transfer.Furthermore,we also assess the influence of distorting effect on the FDCS and find that the distorting effects play a significant role with increasing momentum transfer.Here we have also discussed the effect of internuclear interaction（PT）.The MCB-noPT and MCB-noPT_initial is applied to calculate fully differential cross section for the single ionization of helium by 16 MeV O⁷⁺ impact.The results are compared with MCB-PT and experimental data and we find that the cross-section is slightly influenced by the interaction of PT.Furthermore,the contributions of various scattering amplitudes to FDCS in the present model are reported.