Charge Exchange of Cl⁻ Ions with Atomic Chlorine

The cross sections of the charge exchange of the fast negative chlorine atomic ions inatomic chlorine are calculated by the impact parameter method. Values of the cross sections range between 404.772×10 -16 cm 2 and 129.93×10 -16 cm 2 for the energies 25 eV and 90 KeV of Cl - ions, respectively. The above cross sections are a few times larger than those of the similar symmetric positive ion-atom charge exchange reactions. For Cl - in chlorine, the cross sections are even higher than that of H - in atomic hydrogen, calculated by Dalgarno and McDowell with the PSS method.