State selected ion--molecule reactions by a TESICO technique. V. N/sub 2//sup +/(v)+Ar. -->. N/sub 2/+Ar/sup +/

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

OSTI ID:5198171

Kato, T; Tanaka, K; Koyano, I

Charge transfer reactions N/sub 2//sup +/(v)+Ar..-->..Ar/sup +/+N/sub 2/ (1) have been studied by selecting the vibrational states of N/sub 2//sup +/ using the threshold electron--secondary ion coincidence (TESICO) technique. Relative cross sections sigma(v) for the individual vibrational states v = 0--3 have been determined at three collision energies, 0.3, 1.5, and 11.8 eV. Results show that Reaction (1), which is endoergic for v = 0, is considerably enhanced by the vibrational excitation of N/sub 2//sup +/ at all collision energies. While excitation of one vibrational quantum enhances the cross section substantially, excitation of additional quanta further increases the cross section up to v = 3. The ratios sigma(2)/sigma(1) and sigma(3)/sigma(2) are, however, much smaller than sigma(1)/sigma(0) and are significantly larger at the highest collision energy than at the other two collision energies. These results are discussed in conjunction with the calculated results based on the simple two-state theory of Rapp and Francis and the Franck--Condon factors.

• Research Organization: Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
• OSTI ID: 5198171
• Journal Information: J. Chem. Phys.; (United States), Vol. 77:2
• Country of Publication: United States
• Language: English

Related Subjects

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