Raman spectroscopy of supersonic jets of CO 2 : Density, condensation, and translational, rotational, and vibrational temperatures
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چکیده
منابع مشابه
Temperature and density mapping of supersonic jet expansions using linear Raman spectroscopy.
Supersonic expansions associated to molecular gas jets are of considerable interest for various branches of physics, chemistry, and engineering. The properties of such rarefield environments differ markedly from those of a gas at thermodynamical equilibrium, and a complete diagnostic of their local properties is desired. The spatial distribution of molecular species, and its absolute density, t...
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Number density and rotational temperature in the zone of silence of supersonic jets of N(2), H(2), and their mixtures N(2) + 2H(2) and 2N(2) + H(2), at p(0) = 1 bar and T(0) = 295 K, have been measured by Raman spectroscopy. Translational temperature in the jets has been derived from the experimental data assuming isentropic flow. The density along the jet axis decays at a rate depending on the...
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The very first steps of condensation as studied experimentally in the simplest molecular system (para-H(2)) are reported. The fast time-space evolution of the nascent clusters have been measured using state-of-the-art Raman spectroscopy implemented on cryogenic supersonic jets. The time-dependent onset of condensation is presented in a non-equilibrium pressure-temperature phase diagram. Dimer a...
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تاریخ انتشار 2014