Effects of argon on the IR multiphoton dissociation of C₃F₆

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• 作者：Torresano ; J.A. ; Santos ; M.
• 刊名：Chemical Physics Letters
• 出版年：1997
• 期刊代码：7_00092614
• 类别：ph
• 出版时间：October 3, 1997
• 卷：277
• 期：1-3
• 页码：39-43
• 文件大小：381 K

摘要

This work reports on the infrared multiphoton dissociation of hexafluoropropene (0 to 2 mbar) in the presence of added argon (0 to 15 mbar), at a constant value of the irradiation fluence (4J cm⁻²). Together with the quenching of the dissociation yield, the addition of Ar produces a modification of the qualitative behaviour of C₃F₆ with respect to the dissociation process, associated with the induction of an anharmonic barrier similar to that induced by varying the irradiation fluence. This effect is observed through the activating role of C₃F₆-C₃F₆ collisions found at higher Ar pressures. The anharmonic barrier is principally vibrational, although for small values of fluence a rotational component has been detected.