Stripping of Fast Helium-Like Ions in Multiple Collisions with Diatomic Molecules

Cross sections of single and double stripping of fast helium-like Fe24+ ions upon collisions with N-2 molecules have been calculated by nonperturbative methods for the impinging ion energies of 10, 100, and 1000 MeV/nucleon. It is shown that an allowance for the multiple collisions leads to significant differences between the projectile stripping cross sections for the target molecules oriented parallel and perpendicular to the incident particle velocity, whereas for chaotic orientations, this difference is insignificant.