Ultrafast Dynamics of Molecular Solids Under Extreme Pressure

极压下分子固体的超快动力学

• 批准号: 9008551
• 负责人: Eric Chronister
• 金额: $ 18.2万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9008551&HistoricalAwards=false
• 关键词: Ultrafast; Dynamics; Molecular; Solids; Under

Dr. Eric Chronister is supported by a grant from the Experimental Physical Chemistry Program to study fast dynamical processes which occur in molecular solids at extreme pressures. These experiments will provide important information on how chemical reactions are influenced by conditions of extreme pressure at very low temperatures. In this project Chronister will utilize high pressure and time-resolved coherent spectroscopies to study details of solid state intermolecular interactions which cannot be obtained by other means. Although temperature provides the energy for a system to move on a potential energy surface, the effect of increased density is very different since it influences the shape of the potential energy surface. Chronister's research will be useful in developing dynamic theories of optical dephasing, vibronic relaxation and inhomogeneous coherence loss, all of which are controlled by the shape of the intermolecular potential energy function. Since no high pressure studies of relaxation dynamics of molecular solids at low temperature have yet been done, Chronister will begin with detailed studies of pure and mixed crystal systems as well as some novel molecular solids.

Eric Chronister博士得到了 实验物理化学计划研究快速动力学 分子固体在极压下发生的过程。 这些实验将提供重要的信息， 化学反应受到极端条件的影响 在非常低的温度下。 在这个项目中，Chronister将利用高压和 时间分辨相干光谱学研究固体的细节 状态分子间的相互作用，不能通过 其他方式 虽然温度提供了能量， 系统在势能面上运动， 增加的密度是非常不同的，因为它影响了 势能面的形状。 Chronister的研究 将有助于发展光学动力学理论 退相、电子振动弛豫和非均匀相干 所有这些都是由形状控制的。 分子间势能函数 由于没有高 分子固体弛豫动力学的压力研究 低温还没有完成，Chronister将开始与 纯晶体和混合晶体系统的详细研究， 一些新的分子固体。