Desorption of volatile molecules from the surface of interstellar carbonaceous dust analogs

The desorption of volatile molecules from dust grains in cold dense clouds is crucial for the chemical inventory in the various stages of cloud collapse. In this work we investigate the desorption of N₂, CO, CH₄ and CO₂ from surfaces of hydrogenated amorphous carbon (HAC), which, according to IR observations, is one of the main components of interstellar dust.