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Paul J. Wrzesinski, Hans U. Stauffer, Waruna D. Kulatilaka, James R. Gord and Sukesh Roy Time-resolved femtosecond CARS from 10 to 50 Bar: collisional sensitivity Journal of Raman Spectroscopy 44

Version of Record online: 26 MAR 2013 | DOI: 10.1002/jrs.4287

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Time-resolved fs-coherent anti-Stokes Raman scattering (CARS) measurements on neat gases and gas mixtures at pressures up to 50 bar exhibit no dependence on the system pressure during the first 1–3 picoseconds. This is significant in that most CARS diagnostic approaches require accurate modeling of pressure-dependent effects, which proves to be challenging over large pressure ranges using traditional scaling-law treatment of rotational energy transfer.

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