Rare Gases and Other Simple Systems at High Pressures

高压下的稀有气体和其他简单系统

• 批准号: 8822639
• 负责人: William Daniels
• 金额: $ 35.25万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-15 至 1992-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822639&HistoricalAwards=false
• 关键词: Rare; Gases; Other; Simple; Systems

This program is dedicated to the study of dynamic, electronic, and optical properties of simple systems at extreme pressures and low temperatures. The techniques used in the experiments are principally inelastic scattering of light. In the recent past, most of the light scattering has been spontaneous Raman scattering. More recently the laboratory added facilities to do coherent anti-Stokes Raman Scattering (CARS) and other four wave mixing experiments. Among these, two-photon resonances are being exploited to probe electronic structure of samples within anvil cells. A particular advantage of the multiphoton technique is the ability to examine electronic states having energies higher than the maximum photon energy at which high pressure windows, e.g. diamond, are transparent. They propose to exploit this advantage in a program of study of electronic excited states in hydrogen and deuterium and in exygen, nitrogen, and benzene at extreme pressures.

该程序致力于在极端压力和低温下简单系统的动态，电子和光学性质的研究。 实验中使用的技术主要是光的非弹性散射。 在最近的过去，大多数光散射都是自发的拉曼散射。 最近，该实验室增加了进行连贯的反stokes拉曼散射（CAR）和其他四个波浪混合实验的设施。 其中，两光子共振被利用为砧座细胞内样品的电子结构。 多光子技术的一个特殊优势是能够检查具有高于高压窗口的最大光子能量的电子状态，例如钻石，是透明的。 他们建议在极端压力下的氢气和氘，氮，氮和苯中的电子激发态的研究计划中利用这一优势。