Molecular Beam Scattering Studies of the Gas-Liquid Interface

在实验物理化学项目的支持下，Nathanson教授通过从液体表面散射分子束来研究气液界面。他的小组正在研究表面的局部粗糙度和刚性，以及溶剂分子对溶剂化、表面吸附和表面化学的影响。在真空条件下，抑制了表面以上蒸气的碰撞，Nathanson使用飞行时间光谱来测量撞击液体表面的单个溶质分子的散射和吸附-解吸的细节。惰性气体和质子溶质，如水和氨，从疏水、氢键和酸性液体中散射出来，以了解入射碰撞能量和入射光束的接近角度如何控制界面上的吸附、溶剂化和质子交换。

With support from the Experimental Physical Chemistry Program, Professor Nathanson is studying the gas-liquid interface by scattering molecular beams from liquid surfaces. His group is studying the local roughness and rigidity of the surface and the effect of solvent molecules on solvation, surface adsorption, and surface chemistry. Under vacuum conditions that suppress collisions in the vapor above the surface, Nathanson uses time-of-flight spectroscopy to measure the details of scattering and adsorption-desorption of individual solute molecules striking the liquid surface. Inert gases and protic solutes such as water and ammonia are being scattered from hydrophobic, hydrogen-bonding, and acidic liquids to learn how the incident collision energy and angle of approach of the impinging beam control adsorption, solvation, and proton exchange at the interface.