Abstract
To date, more than 140 different molecules have been identified in the interstellar medium. Dust particles were also discovered, and some of these molecules were frozen at temperatures of 10–20 K to form molecular ice. Understanding the adsorption and desorption processes of these formed ices is critical to understanding the processes that lead to the formation of stars and planets. Highly sensitive surface sensing techniques, including temperature programmed desorption and reflectance adsorption infrared spectroscopy, are increasingly used to study interactions between condensed objects. This kind of experimental data provides insight into the processes occurring in ice of astrophysical significant molecules from several surfaces of model cosmic surfaces. The main goal of the research was to obtain experimental data on the processes of adsorption and thermal variation in thin films of cryocondensate of astrophysical significant molecules of substances. Research is aimed at gaining an understanding of the mechanisms of adsorption and desorption on amorphous porous samples under conditions like those in outer space. Using the method of vacuum condensation of substances on a cryogenic optical surface, experimental results of the structural transformation of films and their optical characteristics were obtained.