Molecular dissociations in TEA-CO2 laser field

Ioan Deac; V. Cosma; Valer Almasan; N. Palibroda; Ioan Ursu

doi:10.1117/12.203534

8 March 1995 Molecular dissociations in TEA-CO₂ laser field

Ioan Deac, V. Cosma, Valer Almasan, N. Palibroda, Ioan Ursu

Proceedings Volume 2461, ROMOPTO '94: Fourth Conference in Optics; (1995) https://doi.org/10.1117/12.203534
Event: ROMOPTO '94: 4th Conference on Optics, 1994, Bucharest, Romania

Abstract

Dimethylamine (DMA) and trimethylamine (TMA) molecules are photolyzed with a TEA- CO₂ laser at 1035 cm^-1 in focussed and unfocussed beams with fluences up to 12 J/cm² and stable products are determined for up to 20 Torr pressure. The formation of stable products like CH₄, C₂H₂, C₂H₄ and probably C₂H₆ proved that the main channel of infrared multiphotonic dissociation (IRMPD) of both molecules consists in scission of CH₃ - N bond. The remaining energized radicals are converted to HCN in TMA IRMPD and HCN and NH₃ in DMA IRMPD. In the last case, secondary reactions between CH₃ radicals and DMA molecules yield to TMA formation. At prolonged irradiation, considerable quantities of TMA are formed which can react with CN and (CH₃)₂N radicals to produce (CH₃)₂N - CH₂ - CN and (CH₃)₂N - CH₂ - N(CH₃)₂ compounds.

Citation Download Citation

Ioan Deac, V. Cosma, Valer Almasan, N. Palibroda, and Ioan Ursu "Molecular dissociations in TEA-CO₂ laser field", Proc. SPIE 2461, ROMOPTO '94: Fourth Conference in Optics, (8 March 1995); https://doi.org/10.1117/12.203534

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