Collision dynamics of MCI-molecule systems studied by multi-coincidence technique

Collision dynamics and reaction processes in charge transfer collisions of Kr8+ + N2 below 200 eV/u have been studied. We used a multi-coincidence technique which enables us to obtain kinematic information for both the fragment ions and the scattered projectile. The collision phenomena observed in the time-of-flight spectra of target ions are well clarified in consideration of the kinematics in colliding particles. We found an anisotropy in charge-unbalanced fragmentation channels at lower collision energy. The anisotropic behavior becomes significant not only with decreasing the collision energy but also with increasing the charge imbalance of the fragment ion-pair. The collision dynamics in the Kr8+ + N2 system is characterized by the transverse recoil momentum and the anisotropic fragmentation.