Ultrafast Dynamics of Mixed Crystalline and Amorphous Solids Under High Pressure

高压下混合晶体和非晶固体的超快动力学

• 批准号: 9400542
• 负责人: Eric Chronister
• 金额: $ 32万
• 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: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9400542&HistoricalAwards=false
• 关键词: Ultrafast; Dynamics; Mixed; Crystalline; Amorphous

In this in the Experimental Physical Chemistry Program of the Chemistry Division, Chronister will test theoretical models of the dynamics of molecular solids. A combination of high pressure and ultrafast nonlinear coherent spectroscopic techniques will be used as high resolution probes of the dynamics of molecular solids at low temperatures. Ultrafast coherent Raman, photon echo, and material preparation techniques will be used to uncover the homogeneous dynamics in amorphous and pressure broadened systems. These experiments will be used to refine theories of optical and vibrational dephasing in amorphous and mixed crystalline solids. %%% Chronister will measure the behavior of solids under high pressure and low temperatures. The information gathered is difficult to obtain because the pressures involved are extremely high and temperatures are very low. However, these data will ultimately aid our understanding of the dynamic interactions between species in solid solution and their host materials.

在化学部的实验物理化学计划中，Chronister将测试分子固体动力学的理论模型。高压和超快非线性相干光谱技术的结合将被用来作为低温下分子固体动力学的高分辨率探测器。超快相干拉曼、光子回波和材料制备技术将被用来揭示非晶态和加压加宽系统中的均匀动力学。这些实验将被用来完善非晶态和混合晶体固体中的光学和振动消相理论。计时器将测量固体在高压和低温下的行为。收集到的信息很难获得，因为涉及的压力极高，温度非常低。然而，这些数据最终将有助于我们理解固溶体中物种与其宿主材料之间的动态相互作用。