Quantum effects in rotationally inelastic molecular scattering: K+N/sub 2/ and K+CO collisions on simple model surfaces

Journal Article · Tue Jan 15 04:00:00 EST 1980 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.439253· OSTI ID:5729657

Schinke, R

Rigid-rotor calculations within the infinite-order-sudden approximation have been performed for K+N/sub 2/ and K+CO collisions in the energy range 0.75 eV< or =E< or =2.0 eV and for scattering angles 50/sup 0/< or =THETA< or =150/sup 0/. Simple model potentials have been chosen to reproduce roughly the experimental findings of Schepper, Ross, and Beck (Z. Phys. A 290, 131 (1979)). In the asymmetric case two distinct rotational rainbows in the final rotational distribution at each scattering angle are observed, which coincide in collisions with homonuclear molecules. Additional oscillations on the ''bright'' side of the main rainbow maxima caused by interference of a maximum of four stationary phase points in the integration over the orientation angle are not yet resolved experimentally. The dependence of these rotational rainbow structures on collision energy, scattering angle and potential parameters is investigated. The findings for homonuclearmolecules are partly described by a simple ''inversion'' formula derived from an exponential potential in the case of backward scattering.

• Research Organization: Fachbereich Physik, Universitaet Kaiserslautern, 675 Kaiserslautern, Federal Republic of Germany
• OSTI ID: 5729657
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
INELASTIC SCATTERING
METALS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM
ROTATIONAL STATES
SCATTERING
SUDDEN APPROXIMATION