Engineering Research Equipment Grant: Excimer Laser

正在购买的准分子激光器将用于研究发生在光解离、化学反应、非弹性碰撞或表面气体解吸中的过渡络合物的分解。该仪器提供线性偏振紫外线脉冲，用于解离内部冷分子。用第二束激光，通过激光诱导荧光，分析产物的特定电子、振动和旋转状态。分子排列的测定可以得到有关反应动力学的详细信息。例如，未配对的电子瓣通常优先指向断裂键的方向。这些实验增加了对这些过程的理解的新维度。

An excimer laser is being purchased to be used to investigate the breakup of transition complexes such as those occurring in photodissociation, chemical reactions, inelastic collisions, or gas desorption from a surface. This instrument provides pulses of linearly-polarized ultra-violet light that are used to dissociate internally-cold molecules. The products are analyzed with a second laser, via laser-induced fluorescence, for specific electronic, vibrational, and rotational states. The determination of molecular alignments can yield detailed information about the dynamics of the reactions. For example, an unpaired electron lobe often preferentially points in the direction of a broken bond. The experiments add a new dimension of understanding to these processes.