The refractive indices of thin films of vacuum condensates cryo methane

Abstract

In this paper we investigate the dependence of the refractive index n of cryocondensates of CH₄ from methane condensation temperature T. A comparative analysis of the values of refractive index n and density ρ cryocondensates methane CH₄, ammonia NH₃, carbon dioxide CO₂ and water H₂O. These values of the coefficients of refraction n of methane CH₄ with decreasing condensation temperature T undergoes rupture in the vicinity of the phase transition temperature associated with the freezing of degrees of freedom of a quarter of molecules. The coefficient of refraction n of carbon dioxide CO₂ with decreasing temperature T undergoes the greatest change at 77K 1.41 and 1.28 at 20K. For cryocondensation H2O water temperature changes did not affect the values of the refractive index, n. These results can be used in astrophysical research.