Interference effects in rotational state distributions: Propensity and inverse propensity
Semiclassical scattering theory has been used to investigate interference effects in rotational state distributions for inelastic atom--diatom collisions. The ..delta..j=even selection rule for homonuclear molecules is seen semiclassically to be an interference effect, and when this symmetry is weakly broken--i.e., an ''almost homonuclear'' molecule, one for which the odd anisotropy is much smaller than the even anisotropy--the interference persists in the form of a propensity rule, sigma (odd ..delta..j) <sigma (even ..delta..j). It is suggested that rotationally state-selected experiments which resolve this interference structure would be an extremely sensitive measure of the anisotropy in the interaction potential.
- Research Organization:
- Department of Chemistry, and Materials and Molecular Research Division of the Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
- OSTI ID:
- 7220716
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 67:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ATOM-MOLECULE COLLISIONS
INELASTIC SCATTERING
REACTION KINETICS
EXCITATION
INTERATOMIC FORCES
INTERFERENCE
QUANTUM MECHANICS
ROTATIONAL STATES
SELECTION RULES
SEMICLASSICAL APPROXIMATION
ATOM COLLISIONS
COLLISIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
KINETICS
MECHANICS
MOLECULE COLLISIONS
SCATTERING
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena