Properties of water and argon clusters developed in supersonic expansions.
J Chem Phys
; 159(12)2023 Sep 28.
Article
en En
| MEDLINE
| ID: mdl-38127374
ABSTRACT
Using adiabatic molecular dynamics coupled with the fluid dynamics equations, we model nucleation in an expanding beam of water vapor and argon on a microsecond scale. The size distribution of clusters, their temperature, and pickup cross sections in dependence on velocity are investigated and compared to the geometric cross sections and the experiment. The clusters are warmer than the expanding gas because of the time scale of relaxation processes. We also suggest that their translational and rotational kinetic energies are modified due to evaporative cooling. The pickup cross sections determined for the final clusters using molecules of the same kind increase with decreasing velocity, still obeying the (a+bN1/3)2 law.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Chem Phys
Año:
2023
Tipo del documento:
Article
País de afiliación:
República Checa
Pais de publicación:
Estados Unidos