Low velocity collision of O6+ with He by MO base treatment

Partial and total cross sections of single electron capture processes by O6+ ion from He are calculated for the velocity range of 0.075 to 0.5 au. (0.14-7.0 keV/amu). A molecular orbital expansion method including two-electron-type electron translation factors has been employed along with classical trajectories. The adiabatic potential energies and wavefunctions for the (O+He)6+ system are generated using a pseudopotential technique. This technique reduces four-electron system to a relatively simple two-electron system. The authors pseudopotential for the O6+(1s2) ion core is represented by an iota-dependent gaussian type. The cross sections were calculated. Calculated total cross sections are relatively independent of velocity. Partial cross sections are more sensitive to velocity at lower velocity region. These findings agree with experimental observations and results calculated with an atomic orbital expansion method