ELECTRON PRODUCTION IN COLLISIONS OF C3+ WITH NOBLE GASES A. C. F. Santos, W. S. Melo, M. M. Sant'Anna, G. M. Sigaud,and E. C. Montenegro Departamento de F=EDsica, Pontif=EDcia Universidade Cat=F3lica do Rio de Janeiro, PUC-Rio, Cx. Postal 38071, Rio de Janeiro, RJ 22452-970, Brazil This work presents coincidence measurements of multiple ionization cross sections resulting from charge transfer, projectile electron loss and direct ionization processes for 1.3 up to 3.5 MeV C3+ ions colliding with He, Ne, Ar, Kr, and Xe. The present data shows the increasingly importance of the multiple ionization channels when the projectile changes its charge state.=20