Articolo in rivista, 2019, ENG, 10.1016/j.cplett.2019.136595

Dense gas effects in the Rayleigh-Brillouin scattering spectra of SF6

Bruno, D.; Frezzotti, A.

CNR-ISTP, Bari, Italy; Politecnico di Milano, Milano, Italy

Rayleigh-Brillouin scattering spectra of SF6 are modeled at room temperature in the pressure range [0.2-5] bar and compared to recent experimental measurements (Wang et al., 2017). It is shown that lineshape models that account for density-dependent corrections to the thermodynamic properties provide substantially better agreement than the models assuming an ideal gas model. For intermediate pressures, where a hydrodynamic description of the spectra fails due to kinetic effects, the Enskog-Vlasov kinetic model is shown to reproduce experimental data with good accuracy both at low and high pressure.

Chemical physics letters (Print) 731 , pp. 136595-1–136595-9

Keywords

Rayleigh-Brillouin scattering, SF6 gas, DSMC simulation, Enskog-Vlason kinetic equation

CNR authors

Bruno Domenico

CNR institutes

ISTP – Istituto per la Scienza e Tecnologia dei Plasmi

ID: 415318

Year: 2019

Type: Articolo in rivista

Creation: 2020-01-15 13:39:49.000

Last update: 2022-02-04 11:24:13.000

CNR authors

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:415318

DOI: 10.1016/j.cplett.2019.136595

ISI Web of Science (WOS): 000480699500014

Scopus: 2-s2.0-85068905560