Nonadiabaticity in ion--molecule reactions: Coupling of proton and charge transfer in the H/sup +//sub 2/ and D/sup +//sub 2/+Ar system

Journal Article · Thu Jul 15 00:00:00 EDT 1982 · J. Chem. Phys.; (United States)

OSTI ID:5232877

Houle, F A; Anderson, S L; Gerlich, D; Turner, T; Lee, Y T

An experimental study of proton and charge transfer in H/sup +//sub 2/+Ar and D/sup +//sub 2/+Ar has been carried out as a function of kinetic and vibrational energy. The data show that charge transfer is predominantly long range, having a weak translational, but strong vibrational dependence. The existence of near-resonant energy levels is very important in determining the magnitude of the cross sections, while favorable Franck--Condon factors between the states is found to be less critical. Undulations in the charge transfer cross sections for both H/sup +//sub 2/ and D/sup +//sub 2/(v = 0) as a function of kinetic energy have been observed for the first time. As kinetic energy increases, the resemblence between the vibrational dependences of the proton and charge transfer channels becomes quite pronounced. This indicates that the two channels are closely coupled, especially above approx.3 eV.

• Research Organization: Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 5232877
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
CATIONS
CHARGE EXCHANGE
CHARGED PARTICLES
CHEMICAL REACTIONS
COLLISIONS
CROSS SECTIONS
DEUTERIUM IONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HYDROGEN IONS
HYDROGEN IONS 2 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MOLECULAR IONS
NONMETALS
RARE GASES
VIBRATIONAL STATES