Classical study of collisions of rydberg atoms with polar molecules
Thesis/Dissertation
·
OSTI ID:6950315
Cross sections for the collision of a highly excited atom with a polar molecule have been calculated using a classical trajectory Monte-Carlo approach. Many features of experiment have been observed and explained. For example, the tendency for the Rydberg atom to be further excited can be explained by the likelihood for multiple electron-molecule encounters. Furthermore, the probability of multiple encounters also casts doubts on the validity of the free electron model, a commonly used approach in Rydberg collision problems. Quantitatively, the state changing cross sections calculated in this study are typically smaller than experimental measurements. This may be due to the failure of classical mechanics to quantize the possible states of a physical system, especially since the total cross section agrees with experiment. It is thus hoped that a proposed semi-classical procedure, in which the molecule is treated quantum mechanically,w ill produce results in better agreement experiment.
- Research Organization:
- Rice Univ., Houston, TX (USA)
- OSTI ID:
- 6950315
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CLASSICAL MECHANICS
COLLISIONS
CROSS SECTIONS
DATA
ENERGY LEVELS
EXCITED STATES
INFORMATION
MATHEMATICAL MODELS
MECHANICS
MOLECULE COLLISIONS
MONTE CARLO METHOD
NUMERICAL DATA
PARTICLE KINEMATICS
RYDBERG STATES
THEORETICAL DATA
400201* -- Chemical & Physicochemical Properties
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CLASSICAL MECHANICS
COLLISIONS
CROSS SECTIONS
DATA
ENERGY LEVELS
EXCITED STATES
INFORMATION
MATHEMATICAL MODELS
MECHANICS
MOLECULE COLLISIONS
MONTE CARLO METHOD
NUMERICAL DATA
PARTICLE KINEMATICS
RYDBERG STATES
THEORETICAL DATA