Pulsed Laser Spectroscopy and Kinetics in Physical Chemistry

脉冲激光系统将用于升级几个上层化学实验室。这是一个非常通用的系统，它展示了现代光谱学技术，并允许广泛的化学和物理现象进行探索。氮激光器将提供非常短的紫外光脉冲，适合启动光谱和动力学研究。电子设备将允许学生在纳秒和微秒时间尺度上跟踪过程。染料激光附件扩展了整个可见范围的输出。其主要用途将是在高级综合分析-物理化学实验课程中。学生们将通过荧光研究激发态的寿命。他们将观察短寿命的反应中间体，并研究荧光猝灭的动力学。该仪器将加强当前学生的工作；例如，我们将使用拉曼光谱来补充当前的红外光谱模块。几个实验是针对材料科学领域的，包括聚乙炔的光电性的时间分辨研究，微孔硅的发光，以及金属硫化物簇荧光的量子尺寸效应的研究。

9451395 Endres A pulsed laser system will be used to upgrade several upper level chemistry laboratories. This is a very versatile system which demonstrates modern techniques in spectroscopy and allows a wide range of chemical and physical phenomena to be explored. A nitrogen laser will provide very short ultraviolet light pulses suitable for initiating spectroscopic and kinetics studies. The electronics will permit students to follow process on the nanosecond and microsecond time scale. A dye laser accessory extends the output throughout the visible range. The primary use will be in an upper level integrated Analytical-Physical Chemistry laboratory course. The students will study the lifetime of excited states through fluorescence. They will observe short lived reaction intermediates and will study the kinetics of the quenching of fluorescence. The apparatus will enhance current student work; for example, we will use Raman spectra to complement the current Infrared spectroscopy module. Several experiments are directed at areas of Materials Science including time resolved studies of photoconductivity in polyacetylene, the luminescence of microporous silicon, and the study of quantum size effects in the fluorescence of metal sulfide clusters.