Thermal desorption study of air on laboratory analog of interstellar dusts

Abstract

Progress in the ultra high vacuum surface experiments allows us to simulate environments that exist in the dense interstellar medium. This enable us to study various physical and chemical parameters which are needed to explain the formation of complex molecules on the interstellar dust grains. Dense clouds have densities between 104 and 107 cm−3 and temperature as low as 8 K and impinging flux of molecular and atomic reactants. In this proceeding, we discussed on a new laboratory set-up which was recently built at S N Bose National Centre for Basic Sciences and presented thermal desorption study of air on olivine substrate which is a close analog of interstellar dust grains.