Abstract
A method for generating energetic beams of CF3I molecules and CF3 radicals was described. The method is based on the formation of pressure shock in front of a solid surface due to the impact of an intense, pulsed, gas-dynamically cooled molecular beam (or flow) on this surface and its use as a source of a secondary beam for producing energetic molecules. The secondary beam was formed upon efflux of molecules from the pressure shock through an orifice into a high-vacuum chamber compartment. The accelerated CF3I molecular beam was generated by exciting the molecules with a powerful IR laser pulse in the pressure shock (in the secondary-beam source itself) and the beam of energetic CF3 radicals was produced through the dissociation of CF3I in either the pressure shock or the accelerated beam. High-density (≥1020 molecule/(sr s)) beams of CF3I molecules and CF3 radicals with a kinetic energy of ≥1.2 and ≥0.4 eV, respectively, were obtained.
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Makarov, G.N. Generation of Pulsed High-Energy Beams of Trifluoroiodomethane Molecules and Trifluoromethyl Radicals. High Energy Chemistry 38, 46–50 (2004). https://doi.org/10.1023/B:HIEC.0000012064.78338.79
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DOI: https://doi.org/10.1023/B:HIEC.0000012064.78338.79