Inelastic collisions of OH (/sup 2/Pi) with H/sub 2/: Comparison between theory and experiment including rotational, fine structure, and. lambda. -doublet transitions

Journal Article · Fri Dec 14 23:00:00 EST 1984 · J. Chem. Phys.; (United States)

OSTI ID:6212854

Schinke, R; Andresen, P

Detailed cross section calculations for inelastic collisions of OH (/sup 2/Pi) in the ground state j = 3/2, Omega-bar = 3/2 with H/sub 2/ are presented using an ab initio potential energy surface without adjustable parameters. The OH molecular wave function is described within the intermediate coupling case. The results are compared with recent experiments. The agreement is satisfactory for the final rotational state distributions within both the Omega-bar = 3/2 and the Omega-bar = 1/2 ladder. Also the relative magnitude of Omega-bar = 1/2 and 3/2 cross sections is in good accord with experiment and thus indicates that the difference potential V/sub A/'-V/sub A/'' is realistically described by the ab initio calculation. The dynamical calculations yield prefential excitation of one ..lambda..-doublet state. The extent of this preference increases with j and is larger for Omega-bar = 3/2 in qualitative but not quantitative agreement with experiment. Possible interpretations in terms of the potential energy surfaces are briefly discussed.

• Research Organization: Max Planck Institut fuer Stroemungsforschung, 3400 Goettingen, West Germany
• OSTI ID: 6212854
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 81:12; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FINE STRUCTURE
HYDROGEN
HYDROXYL RADICALS
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
RADICALS
ROTATIONAL STATES