Time-resolved infrared fluorescence from 2ν1 and 2ν8 modes of CF2Cl2 excited by a CO2 laser

Vatsa, R.K.; Kumar, Awadhesh; Naik, Prakash D.; Rao, K. V. S. Rama; Mittal, Jai P.

doi:10.1016/0009-2614(93)89217-6

Cited by 4 publications

(2 citation statements)

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“…The experimental set up used for infrared fluorescence has been described in detail earlier 14,15 . Briefly, experiments were performed in a cell having two orthogonal pairs of windows.…”

Section: Methodsmentioning

confidence: 99%

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TEA CO2 laser-induced reaction of CH3NO2 with CF2HCl: A mechanistic study

2001

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Dissociation of nitromethane has been observed when a mixture of CF 2 HCl and CH 3 NO 2 is irradiated using pulsed TEA CO 2 laser at 9R (24) line (1081 cm-1), which is strongly absorbed by CF 2 HCl but not by CH 3 NO 2. Under low laser fluence conditions, only nitromethane dissociates, whereas at high fluence CF 2 HCl also undergoes dissociation, showing that dissociation occurs via the vibrational energy transfer processes from the TEA CO 2 laser-excited CF 2 HCl to CH 3 NO 2. Time-resolved infrared fluorescence from vibrationally excited CF 2 HCl and CH 3 NO 2 molecules as well as UV absorption of CF 2 radicals are carried out to elucidate the dynamics of excitation/dissociation and the chemical reactions of the dissociation products.

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“…The experimental set up used for infrared fluorescence has been described in detail earlier 14,15 . Briefly, experiments were performed in a cell having two orthogonal pairs of windows.…”

Section: Methodsmentioning

confidence: 99%

“…Isomerisation of CH 3 NO 2 to CH 3 ONO and subsequent decay of the latter to CH 3 O and NO was observed in molecular beam study 7 in the TEA CO 2 laser excitation of CH 3 NO 2 . Isotopic selectivity in 15 N during dissociation of CH 3 NO 2 was disclosed even when vibrational bands having no isotope shifts were pumped 8 .…”

Section: Ch 3 No 2 → Ch 3 + No 2 mentioning

confidence: 98%