Linear and Nonlinear Resonance Raman Studies of Photo- dissociation

光解离的线性和非线性共振拉曼研究

• 批准号: 8918418
• 负责人: Lawrence Ziegler
• 金额: --
• 依托单位: Northeastern University
• 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: 1989-11-15 至 1992-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918418&HistoricalAwards=false
• 关键词: Linear; Nonlinear; Resonance; Raman; Studies

With support from the Experimental Physical Chemistry Program, Professor Ziegler is developing and using novel Raman spectroscopic techniques to investigate the dynamics of photodissociation processes in small polyatomic molecules at a resolution sufficient to examine individual rotational-vibrational levels. Ziegler's experimental and theoretical work is expanding our detailed understanding of the photodissociation process and its variation with the energy and quantum numbers of the initially prepared state. Previously developed rotational resonance Raman techniques are being used to measure rovibrational quantum specific lifetimes of short-lived (20 femtoseconds to 5 picoseconds) quasi-bound excited state levels. Resonance hyper-Raman is extending the work to dissociative molecular excited states in the vuv accessible via two-photon processes with near-uv photons. Planned work also includes the use of resonant Coherent Anti-Stokes Raman Spectroscopy (CARS) to achieve greater rotational quantum resolution and allow the study of larger molecules.

在实验物理化学计划的支持下，齐格勒教授正在开发并使用新型的拉曼光谱技术来研究小型多原子分子中光解离过程的动力学，该分辨率足以检查单个旋转振动水平。 Ziegler的实验和理论工作正在扩大我们对光电分离过程的详细理解及其随着最初准备的状态的能量和量子数的变化。 先前开发的旋转共振拉曼技术已用于测量短寿命（20秒至5秒至5秒）准绑定的激发状态水平的射击量子特定的寿命。 共振Hyper-Raman正在扩展该工作以通过具有近紫外光子的两光子过程访问的VUV中的分离分子激发态。 计划的工作还包括使用谐振连贯的反stokes拉曼光谱（CAR）来实现更大的旋转量子分辨率并允许研究较大的分子。