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Adiabatic and isothermal sound waves: the case of supercritical nitrogen

F. Bencivenga·A. Cunsolo·M. Krisch·G. Monaco·G. Ruocco·F. Sette
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Abstract

The acoustic sound dispersion of nitrogen in its liquid and supercritical phases has been studied by Inelastic X-Ray Scattering. Approaching supercritical conditions, the gradual disappearance of the positive sound dispersion, characteristic of the low temperature liquid, is observed. In the supercritical state, evidence for a crossover between adiabatic and isothermal sound propagation regimes is inferred by an analysis of the dynamic structure factor based on generalized hydrodynamics.

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F. Bencivenga, A. Cunsolo, M. Krisch, G. Monaco, G. Ruocco, F. Sette. 2005-12-16. Adiabatic and isothermal sound waves: the case of supercritical nitrogen. https://doi.org/10.1209/epl%2Fi2006-10091-y

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