Presidential Young Investigator Award/Molecular Beam Studiesof the Gas-Liquid Interface

Gilbert Nathanson博士由实验物理化学计划的总统青年研究员资助，研究各种低蒸气压液体基质的原子和分子束散射。Nathanson将研究气液界面，以在原子尺度上了解液体表面的粗糙度，了解各种束分子如何吸附、溶剂化或解吸，以及在特别制备的表面上质子交换的过程。内特森的散射实验将通过追踪分子撞击液体表面的轨迹来回答这些问题。以选定速度运动的高度准直的原子或分子束撞击表面并反弹或发生反应用质谱法测定了反应产物的性质及其反冲速度和方向。通过进行微观的“单次碰撞”实验，内桑森希望构建一幅关于化学反应如何在气体和液体之间的界面上发生的亲密画面。

Dr. Gilbert Nathanson is supported by a Presidential Young Investigator Grant from the Experimental Physical Chemistry Program to study atomic and molecular beam scattering from various low vapor pressure liquid substrates. Nathanson will be studying the gas-liquid interface to learn, on an atomic scale, about the roughness of liquid surfaces, about how various beam molecules adsorb, solvate or desorb and about the process of proton exchange on especially prepared surfaces. Nathanson's scattering experiments will answer these questions by following the trajectories of the molecules as they strike the liquid surface. A highly collimated beam of atoms or molecules traveling at a selected velocity impinge on the surface and bounce off or react. The identity of the reaction product and its recoil velocity and direction are monitored by mass spectrometry. By carrying out microscopic,"single collision" experiments, Nathanson hopes to construct an intimate picture of how chemical reactions occur at the interface between gases and liquids.