Dynamics of inelastic collisions of electronically excited rare gas atoms
- Department of Physics, Eindhoven University of Technology, Eindhoven (The Netherlands)
Recent advances in the field of reactive and inelastic schattering of electronically excited rare gas atoms in metastable R*{l brace}(np){sup 5}(n+1)s{r brace} and shortlived R**{l brace}(np){sup 5}(n+1)p{r brace} states are discussed in case studies of the relevant processes: excimer formation, excitation transfer, Penning ionization and intramultiplet mixing. For reactive scattering the fine structure dependence of (KrBr) excimer formation is studied, showing that the propensity for core state conservation depends strongly on the halogen donor used. As a prototype of excitation transfer collisions the Ar*({sup 3}P{sub 0,2})--N{sub 2} system is analysed with respect to electronic, vibrational and rotational excitation. Vibrational excitation is well understood in terms of a Landau Zener type semiclassical model: the two observed rainbow singularities in the rotational distribution lead to a classical description of scattering on a hard shell with both a P{sub 2}--and a P{sub 4}--anisotropy. For Penning ionization new insight is given for the well-studied Ne*({sup 3}P{sub 0,2})--Ar system. Ab-initio calculations of the auto-ionization width confirm the validity of a simple two-state basis model for the metastable states.
- OSTI ID:
- 5989520
- Report Number(s):
- CONF-890708-; CODEN: APCPC; TRN: 91-008516
- Journal Information:
- AIP Conference Proceedings (American Institute of Physics); (USA), Vol. 205:1; Conference: 16. international conference on the physics of electronic and atomic collisions, New York, NY (USA), 25 Jul - 1 Aug 1989; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ARGON
ATOM-ATOM COLLISIONS
EXCITATION
BROMINE COMPOUNDS
ATOM-MOLECULE COLLISIONS
HYDROCARBONS
KRYPTON BROMIDES
CHEMILUMINESCENCE
NEON
NITROGEN
EXCITED STATES
EXPERIMENTAL DATA
HELIUM IONS
INELASTIC SCATTERING
IONIZATION
KRYPTON IONS
METASTABLE STATES
PENNING EFFECT
ATOM COLLISIONS
BROMIDES
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IONS
KRYPTON COMPOUNDS
LUMINESCENCE
MOLECULE COLLISIONS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
RARE GAS COMPOUNDS
RARE GASES
SCATTERING
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena