CALCULATION OF CROSS-SECTIONS FOR ELECTRON-CAPTURE BY FAST FULLY STRIPPED IONS FROM ATOMIC-HYDROGEN

Charge transfer cross-sections in collisions of completely stripped io ns of nuclear charges Z(p) = 3-8, 10 in the intermediate and high ener gy region with the gound state of atomic hydrogen are calculated withi n the framework of a single channel distorted wave approximation. Char ge and velocity dependence of the nth partial cross-sections are studi ed. It is found that for a fixed projectile, n(max) at which the n-th partial cross-section is maximum, moves towards smaller values as the energy increases. For a constant projectile velocity, n(max) increases with the projectile charge. We have also studied the cross-sections o f different sub-levels as a function of energy at n = n(max) which is obtained from the n(max) = Z(p)(3/4) model for various projectiles. Co mparisons are made with other calculations in the overlapping energy r egion.