Projectile electron losses in the collisions with neutral targets: sudden-perturbation approximation

An approach based on the sudden-perturbation approximation is presented for the treatment of single and multiple electron losses of high and intermediate energy projectiles in their collisions with neutral targets. Using this approach, we calculate electron loss cross sections of hydrogen-like Pb 81+ and Au 78+ projectiles in the collisions with neutral atoms. Also, multiple electron loss cross sections are calculated for U 10+ and U 28+ projectiles in their collisions with N 2 and Ar targets.