Effects of collision energy and ion vibrational excitation on proton and charge transfer in H/sub 2//sup +/+N/sub 2/, CO, O/sub 2/

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

OSTI ID:5020876

Anderson, S L; Turner, T; Mahan, B H; Lee, Y T

The effects of vibrational excitation of reagent ions and collision energy on the proton and charge transfer reactions of H/sub 2//sup +/ and D/sub 2//sup +/ with N/sub 2/, CO, and O/sub 2/ have been investigated using a method combining photoionization and a radio frequency guided ion technique. For proton transfer the H/sub 2//sup +/+N/sub 2/ results are quite similar to the H/sub 2//sup +/+Ar system; proton and charge transfer channels are closely coupled for kinetic energies above 3 eV. In contrast, for H/sub 2//sup +/+CO, the vibrational dependence of proton transfer is quite weak. For the H/sub 2//sup +/+O/sub 2/ case, evidence is seen for direct competition between the charge and proton transfer process. A simple model for charge transfer is used to assess the importance of energy resonance and Franck--Condon effects. In these simple molecular systems, the energy defect is found to be most important to charge exchange, although Franck--Condon factors play a substantial role.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 5020876
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:4; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATIONS
CHALCOGENIDES
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULAR IONS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
VIBRATIONAL STATES