This article is cited in 16 papers

Laser applications and other topics in quantum electronics

Selective IR multiphoton dissociation of CF₃I in a nonequilibrium pressure shock

G. N. Makarov^a, S. A. Mochalov^a, A. N. Petin<sup>b

a</sup> Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow
^b State Research Center of Russian Federation "Troitsk Institute for Innovation and Fusion Research"

Abstract: The isotopically selective IR multiphoton dissociation of CF₃I is studied in a nonequilibrium pressure shock formed in the interaction of a pulsed gas-dynamically cooled molecular flow with a solid surface. The yield of a C₂F₆ product and its enrichment factor by the ¹³C isotope were measured experimentally. The time-of-flight spectra of CF₃I were obtained in the flow interacting with the surface and in an unperturbed flow. The spectral dependences of the yield of a C₂F₆ product in an unperturbed flow and in a pressure shock were studied along with the process selectivity. It was shown that the efficiency of isotopically selective molecule dissociation can be significantly increased due to the formation of a pressure shock. The origin of the results observed are discussed.

PACS: 33.80.-b, 42.62.Fi, 82.40.Fp, 82.50.Pt

Received: 12.10.2000
Revised: 20.12.2000

 English version: Quantum Electronics, 2001, 31:3, 263–267

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