Resonant multiphoton dissociation of ethyl chloride at 3. 3. mu. m
The interest in multiphoton dissociation (MPD) of molecules stems from the discovery of high isotopic selectivity for the process in 1974. Recently enrichment ratios in excess of 10/sup 4/ have been achieved for deuterium separation using trifluoromethane and > 30 with high yield for carbon 13 using CF/sub 3/I. A pilot plant has been set up for large scale productions of carbon 13. While these advances in practical applications are made, work is going on to understand the physics of the process. Most of the work is concentrated on molecules excitable by the CO/sub 2/ laser for the obvious reason that the light source is easily available. However, a number of groups have also been studying excitation of the hydrogen stretches. The hydrogen stretch is of great interest because each quantum absorbed by the H-stretches is about three times the energy of a CO/sub 2/ laser quantum, and thus a higher fraction of the dissociation energy. On the other hand, hydrogen stretches have relatively higher anharmonicity and may be weakly coupled to the rest of the molecule. The effect of these on MPD is explored.
- Research Organization:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- DOE Contract Number:
- W-7405-ENG-4
- OSTI ID:
- 5704062
- Report Number(s):
- LBL-9988; CONF-791047-4
- Resource Relation:
- Conference: 11. annual electro optics/laser conference and exposition, Anaheim, CA, USA, 23 Oct 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHLORINATED ALIPHATIC HYDROCARBONS
PHOTON-MOLECULE COLLISIONS
DISSOCIATION
EXPERIMENTAL DATA
GRAPHS
INFRARED RADIATION
LASER RADIATION
OPTICAL PUMPING
COLLISIONS
DATA
DATA FORMS
ELECTROMAGNETIC RADIATION
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
MOLECULE COLLISIONS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTON COLLISIONS
RADIATIONS
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena