Collision Dynamics and Solvation of Water Molecules in a Liquid Methanol Film

• DOI: 10.1021/jz200929y
• Publication Date: 2011-08-10T18:11:14Z
• Authors: Erik S. Thomson; Xiangrui Kong; Patrik U. Andersson; Nikola Marković; Jan B. C. Pettersson
• Keywords: Thermal desorption; Molecular beam

Environmental molecular beam experiments are used to examine water interactions with liquid methanol films at temperatures from 170 K 190 K. We find that molecules 0.32 eV incident kinetic energy efficiently trapped by the methanol. The scattering process is characterized an efficient loss of surface modes a minor component inelastically scattered. Thermal desorption has well Arrhenius form activation 0.47{\pm}0.11 and pre-exponential factor 4.6 {\times} 10^(15{\pm}3) s^(-1). also observe temperature dependent incorporation into layer. implication for fundamental studies environmental applications even alcohol as simple can exhibit complex surfactant behavior.