Inelastic collisions of CaCl(X /sup 2/. sigma. /sup +/) with Ar: A collaborative theoretical and experimental study
We investigate rotationally inelastic cross sections of CaCl(X /sup 2/..sigma../sup +/) with Ar at a collision energy of 0.24 eV. Theoretical cross sections, determined by coupled states calculations based on an electron-gas description of the potential surface, are compared with experimental cross sections, determined in a molecular beam apparatus involving initial state selection by an electric quadrupole field and final state detection by laser-induced fluorescence. The agreement between theoretical and experimental cross sections is excellent, except for the e ..-->.. e transitions with ..delta..N = even, which suggests a residual inaccuracy in the theoretical description of the second Legendre moment of the anisotropy in the potential. Both the theoretical and experimental cross sections clearly confirm a propensity toward conservation of the spectroscopic e/ f label. The sets of experimental and theoretical cross sections can be well fit by the sudden scaling relation, although the entire set of base cross sections can not be well represented by a simple power law.
- Research Organization:
- Department of Chemistry, University of Maryland, College Park, Maryland 20742
- OSTI ID:
- 5772064
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 83:2; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Propensity rules in rotationally inelastic polar molecule collisions involving /sup 2/. sigma. /sup +/ molecules: CaCl(X /sup 2/. sigma. /sup +/)--CH/sub 3/Cl
Quantum studies of inelastic collisions of NO(X /sup 2/Pi) with Ar
Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METAL COMPOUNDS
ARGON
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
INELASTIC SCATTERING
MOLECULE COLLISIONS
NONMETALS
RARE GASES
ROTATIONAL STATES
SCATTERING