Se=& chlorinated methanes (CC4, CHCI3, CH+&.. CH3CI. CH4) and Cl2 were photolyzed with 193 nm ArF Iaser light\_ Upon irradiation OfCCb, CHCI3, and CH2CI2 vacuum W emission is observed which is attributed to wdhtion from excited Cig\_ The escited moIecules are probably formed by sequential absorption
UV multiphoton dissociation of SbBr3
✍ Scribed by H. Knöckel; M. Renger; E. Tiemann
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 414 KB
- Volume
- 208
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
SbBr, molecules in the gas phase were dissociated by 193 and 248 nm laser radiation. The fluorescence was dispersed by a monochromator. Highly excited atomic levels of Sb were found to be significantly populated for three-or four-photon dissociation. A region of continuous fluorescence in the visible range around 550 nm was attributed to the diatomic SbBr radical resulting from a two-photon dissociation. Only weak lines of atomic bromine, but from high levels, were found. A broad weak continuous fluorescence in the UV remains unassigned.
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A general method is presented for the production of excited metal atoms by the photodissociation of metal alkyl and metal carbonyl compounds using the ArF or KrF laser-The process occurs collisionlessly by the sequential absorption of UV photons. Only specific fme structure components (J levels) are