ANGULAR-DISTRIBUTIONS OF PROJECTILES FOLLOWING ELECTRON-CAPTURE FROM C-60 BY 2.5-KEV AR8+

Experimental measurements of the projectile angular distributions for 2.5-keV Ar8+ ions capturing one to five electrons from a gas-phase C-6 0 target are presented. The number of captured electrons was determine d by demanding a coincidence between the scattered projectile and a ch arge-state-analyzed intact C-60 recoil ion. The results are compared t o calculations based on a dynamical classical overbarrier model. Good agreement is obtained only if the influence on the projectile trajecto ry by the large polarizability of the C-60 target is taken into accoun t, thereby making the collective dielectric response of the cluster ta rget observable in a scattering experiment. [S1050-2947(98)08108-6].