Molecular-beam studies of photodissociation reactions
Abstract
A variety of photodissociation reactions were investigated by crossed laser and molecular beams methods. The vibrational predissociation reactions of (C2H4)2 and (NH3)2 at 10.6 (SIGMA) are discussed. Results of infrared multiphoton dissociation studies of C2F5Cl and C2F5Br are qualitatively consistent with RRKM theory and the rate equation model for infrared multiphoton absorption and dissociation. Studies of bromine dimer photodissociation at 484 nm and 532 nm are reported. A reliable lower bound of 5.2 kcal/mole is obtained for the binding energy of Br3. The study of CF2Br2 photodissociation indicates that: Br atom elimination is the only important primary dissociation channel at 248 nm; the electronic transition leading to formation of CF2Br + Br is polarized parallel to the Br-Br axis in CF2Br2; some of the CF2Br primary products undergo efficient secondary photodissociation. Results of a study of the ultraviolet photodissociation of C2F5Br, C2F5I, and 1,2-C2F4BrI are presented. Center of mass recoil energy and angular distributions are determined for each of these reactions.
- Publication:
-
California Univ., Berkeley Report
- Pub Date:
- May 1983
- Bibcode:
- 1983ucb..rept.....K
- Keywords:
-
- Beams (Radiation);
- Dimers;
- Laser Outputs;
- Molecular Beams;
- Particle Collisions;
- Photolysis;
- Ammonia;
- Bromine;
- Dimerization;
- Ethylene;
- Infrared Radiation;
- Ultraviolet Radiation;
- Vibration Mode;
- Lasers and Masers