Vibrational population distributions of the product of the chemiluminescent charge transfer reaction: O+(2D)+HCl→O+HCl+(A 2Σ+)

Abstract

The chemiluminescent charge transfer reaction of O+ (2 D)ions with HCl has been studied in the energy range of 7 to 100 eVc.m. . The vibrational population distributions of the HCl+(A 2 Σ+ ,v′) product have been analyzed from the emission spectra of the A→X transition. At low collision energy the distribution has a peak at v′=3. The partial reaction cross section σ(3) for this level increases with decreasing collision energy. The features of the reaction are very similar to the F+ +CO→ F+CO+ (A) reaction reported previously. The mechanism has been discussed on the basis of curve crossing between the initial and final states along the HCl vibrational coordinate in the asymptotic region of the [O–HCl]+ system. The projectile ions C+ and N+ have also been tested for the charge transfer reaction of HCl(X)→HCl+(A).