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

Gilbert Nathanson博士得到了实验物理化学计划授予的总统青年研究员的支持，该计划研究各种低蒸气压液体基质的原子束和分子束散射。Nathanson将研究气液界面，以了解在原子尺度上液体表面的粗糙程度，各种束流分子如何吸附、溶解或解吸，以及质子在特别准备的表面上的交换过程。纳桑森的散射实验将通过跟踪分子撞击液体表面的轨迹来回答这些问题。一束高度准直的原子束或分子，以选定的速度运动，撞击表面并反弹或反应。用质谱仪监测反应产物的一致性及其反冲速度和方向。通过进行微观的“单碰撞”实验，Nathanson希望构建一幅关于气体和液体之间的界面如何发生化学反应的亲密图片。

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.