SINGLE-ELECTRON TRANSFER IN COLLISIONS OF HE2- VIBRATIONAL-STATE POPULATIONS OF NH3+ AND H2S+( WITH NH3 AND H2S )

Single-electron charge transfer between He2+ and NH3 and H2S was inves tigated at the projectile energy of 70 eV by the translational energy spectroscopy method with a resolution of 120 meV. The products were He +(P-2) and the ground state molecular ion. Populations of the vibrati onal states of the molecular ion were derived from the spectra. The vi brational state distributions differ only slightly from the. distribut ions obtained by photoelectron spectroscopy and the differences can be qualitatively accounted for by distortions of the equilibrium configu ration of the target molecule by the Physics.