J/sub z/-preserving propensity in molecular collisions. II. Close-coupling study of state-to-state differential cross sections

Journal Article · Sat May 01 00:00:00 EDT 1982 · J. Chem. Phys.; (United States)

OSTI ID:5576083

Khare, V; Kouri, D J; Hoffman, D K

In this paper, we present and analyze accurate close-coupling results for polarization transition differential cross sections for ..delta..jnot =0 atom--diatom collisions. The systems considered are He+CO and He+HCl. Cross sections for polarization transitions defined with several choices of quantization axes are presented and discussed. We find that (a) the j/sub z/-preserving cross sections are heavily favored when a generalized apse quantization scheme is used; (b) the other quantization schemes can be factorized for transitions involving lower rotor j states in terms of the dominant j/sub z/-preserving apse quantized amplitudes; (c) this factorization implies limits on the amount of information contained in polarization measurements based on nonapse quantization axes; (d) the factorization (and, hence, its limitations) does not apply to the highest accessible rotor j states; and (e) the propensity for preserving j/sub z/ when quantized along a generalized apse has important implications for the well-known CS decoupling approximation and for other possible decoupling schemes.

• Research Organization: Department of Chemistry and Department of Physics, University of Houston-Central Campus, Houston, Texas 77004
• OSTI ID: 5576083
• Journal Information: J. Chem. Phys.; (United States), Vol. 76:9
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON MONOXIDE
ATOM-MOLECULE COLLISIONS
HELIUM
HYDROCHLORIC ACID
DIFFERENTIAL CROSS SECTIONS
POLARIZATION
ROTATIONAL STATES
ATOM COLLISIONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MOLECULE COLLISIONS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena