Far Ultraviolet Resonance Raman Studies of Electronic Excitations

电子激发的远紫外共振拉曼研究

• 批准号: 9207380
• 负责人: Bruce Hudson
• 金额: $ 34.42万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9207380&HistoricalAwards=false
• 关键词: Far; Ultraviolet; Resonance; Raman; Studies

In this project in the Physical Chemistry Program of the Chemistry Division, Bruce Hudson will study the UV resonance Raman spectra of a broad range of conjugated and non-conjugated polyenes and selected triatomics. Information about vibrational and electronic ground and excited states to be gathered will be related to the mechanism of nuclear/electron coupling in molecules in processes such as photodissociation, photoisomerization, and unimolecular reaction. Experimental methods involving the determination of absolute Raman intensities, depolarization ratio dispersion, tunable excitation, and photochemical generation of subject species in vapor and with matrix isolation will be developed. A new UV spectrograph will be constructed and a Ti:sapphire laser will be developed to produce tunable far-uv radiation. %%% Professor Hudson's research group has developed unique spectroscopic capabilities that allow the study of the initial motion of a molecule which has been excited by a vacuum- ultraviolet photon from its ground electronic energy state. Experiments using these techniques can make important contributions to the understanding of energy flow and intramolecular dynamics in the highly excited states of polyatomic molecules.

在这个项目中的物理化学计划的 化学部，布鲁斯哈德逊将研究紫外共振 广泛的共轭和非共轭的拉曼光谱 多烯和选择的三原子化合物。 信息 振动和电子基态和激发态 收集将与核/电子的机制 在诸如光解离的过程中的分子耦合， 光异构化和单分子反应。 实验 涉及绝对拉曼测定的方法 强度，退偏振比色散，可调 激发和受试物种的光化学生成， 蒸汽和基质隔离将被开发。 新的UV 光谱仪将建成和钛：蓝宝石激光器将 以产生可调谐的远紫外线辐射。 %%% 哈德逊教授的研究小组开发了一种独特的 光谱能力，使研究的初始 一个被真空激发的分子的运动 紫外光子从其基态电子能态。 使用这些技术的实验可以使 对理解能量流动的贡献， 高激发态的分子内动力学 多原子分子