On the Collision Mechanism of Bimolecular Reactions. Part II: The Stripping Mechanism of the Reactions Ar(+)+H2(D2) to ArH(+)+H(ArD(+)+D) at Energies >20 eV,

The bands of ArH and ArD ions have been observed in the velocity spectra of the ions resulting from the interaction chemical reaction and scattering of Ar ions with H2 and D2, respectively. The bands are practically located as it is expected from the stripping model. It is concluded that the Ar ion does not collide with the whole hydrogen molecule in a completely inelastic manner as it is the case at low kinetic energies, where the polarization theory of ion-molecule reactions is applicable. The Ar ion interacts only with the captured hydrogen atom without transfer of momentum to the second atom. The critical energies of the incident Ar ions, above which the cross sections of the two reactions are zero, differ by a factor of about 2 and agree with the energies calculated from the stripping model. In addition, some minor deviations from the stripping model are mentioned. Author