Photoexcitation and photodissociation lasers. III. mechanisms of CO laser emission from the vacuum UV photodissociation of CH2COO2 and CH2COSO2 mixtures

Ming-Chang Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

CO laser emission was detected in the vacuum UV flash photolysis of CH2CO. The emission is attributed to the initial photodissociation reaction {A figure is presented} Addition of O2 to the CH2CO system caused a pronounced enhancement in the laser intensity. This effect is believed to be due to the removal of the CH2 + CH2CO reaction, which produces uninverted CO molecules. A greater laser output was obtained when SO2 was used instead of O2. In the O2-added system, a total of 16 transitions ranging from Δv(8→7) to (4→3) were identified. Addition of SO2 increased the total number of lines to 34, lasing in the range between (11→10) and (4→3). This enhancement is ascribed to the occurrence of the reaction {A figure is presented} In addition to these chemical effects, the effects of flash energy, inert gases and total pressures have been investigated.

Original languageEnglish
Pages (from-to)442-448
Number of pages7
JournalChemical Physics
Volume7
Issue number3
DOIs
StatePublished - 1 Jan 1975

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