Abstract
The collisionless multiphoton ir dissociation of polyatomic molecules is a topic of intense research since this process has been shown to be isotopically selective [1],[2]. Recent emphasis has centered on determining the primary photoproducts and their excited state distribution in order to elucidate the mechanism of the unimolecular dissociation pathway and the energy distribution in the laser excited molecules [3], [4], [5]. The results reported herein, however, show that collisions can have a marked effect on the multiple photon ir absorption process. In particular, for fluence levels below the threshold for collisionless multiphoton dissociation in SF6, there is an increase in the absorption cross section which is directly related to the number of collisions with a nonabsorbing collision partner.
Work performed under the auspices of the US Department of Energy.
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Quigley, G.P. (1978). Collisional Effects in Multiple Photon IR Absorption. In: Zewail, A.H. (eds) Advances in Laser Chemistry. Springer Series in Chemical Physics, vol 3. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67054-1_37
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DOI: https://doi.org/10.1007/978-3-642-67054-1_37
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