The absorption of pulsed infrared radiation by cyclobutanone and its subsequent decomposition

R. G. Harrison, H. L. Hawkins, R. M. Leo, P. John

Research output: Contribution to journalArticle

Abstract

The absorption characteristics of cyclobutanone vapour irradiated with a pulsed CO2 TEA laser at fluences of 0.5-1.5 J cm-2have been studied over the pressure range 0.3 to 20 Torr using both joulemeter and opto-acoustic measurements of the absorbed energy. Under these conditions the product concentration for the two subsequent decomposition channels into ethene + ketene and cyclopropane + CO were determined. Above ˜ 3 Torr the results are consistent with a thermally equilibrated system whereas at lower pressures a distinct enhancement of the lower energy pathway to ethene occurs, indicative of a non-Boltzmann energy distribution. © 1980.

Original languageEnglish
Pages (from-to)555-559
Number of pages5
JournalChemical Physics Letters
Volume70
Issue number3
Publication statusPublished - 15 Mar 1980

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