Measurement of single-electron transfer cross sections in collisions of C 3+ with He, Ne, Ar atoms at low to intermediate velocity

Absolute cross sections for single-electron transfer of He， Ne， Ar atoms induced by C 3+ at low to intermediate velocity (1.7 v 0 —4.2 v 0 ) were measured and calculated using n -body classical trajectory Monte Carlo ( n CTMC) method. Though good overall agreements are achieved between experimental and n CTMC results, certain differences are found. Because of the existence of polarization and the n CTMC being unable to calculate the multi-electron correlation capture cross sections, the experimental results are greater than those of n CTMC at low velocities(1.7 v 0 —2.0 v 0 ). When the velocity of the projectile is higher(2.2 v 0 —4.2 v 0 ), the captured electron’s partial screening of the projectile, the electron-electron dynamic correlation and the effective charge are taken into account in interpreting the qualitative differences between theoretical and experimental results. In addition, the cross section rations of transfer ionization to single electron capture are presented and the mechanism of transfer ionization are discussed.