Molecular beam studies of electronic state-selective photochemistry
The evolution of a specifically excited molecule to its final fragmentation products is studied here for three photochemical systems by the crossed laser-molecular beam technique. Measurement of product velocity distributions and polarization dependences allows elucidation of details of all pathways from excitation through fragmentation. The photodissociation of CH/sub 2/BrI has been studied at 248.5, 210, and 193.3 nm. The dissociation of nitromethane following excitation of the ..pi..* reverse arrow ..pi.. transition at 193 nm has been investigated by product emission spectroscopy and molecular beam photofragmentation translational energy spectroscopy. Dissociation pathways of a vibrationally excited molecule in the ground electronic state have been studied in the infrared multiphoton dissociation of diethyl ether. 100 refs., 76 figs., 5 tabs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6213581
- Report Number(s):
- LBL-20109; ON: DE86004018
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400500* -- Photochemistry
BEAMS
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL EXPLOSIVES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
EMISSION SPECTROSCOPY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
ETHERS
ETHYL ETHER
EXCITED STATES
EXPERIMENTAL DATA
EXPLOSIVES
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
IODINATED ALIPHATIC HYDROCARBONS
MOLECULAR BEAMS
NITRO COMPOUNDS
NITROMETHANE
NUMERICAL DATA
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
SPECTROSCOPY
VIBRATIONAL STATES