Mutual neutralization in collisions between negative hydrogen ions and single-charged positive ions. II. He⁺and Li⁺projectiles at low-keV energies

Coupled-channel impact parameter cross sections are reported for mutual neutralization in He + +H - and Li + +H - collisions for the impact energy range between 0.07 and 25 keV amu -1 . The results are obtained using a one-active-electron model and a 22-state two-centre atomic orbital basis. They are compared with available molecular orbital calculations as well as with experimental data. In a wide range of energies considered, good agreement is obtained with recently measured cross sections. Comparison of present results with neutralization cross sections for H + +H - collisions reveals some differences in the neutralization curves regarding impact velocity, for different projectiles.