Presidential Young Investigator Award/Fourier Transform Coherent Raman Spectroscopy of Molecules

费尔克博士计划进行一项研究计划， 分为三个领域，都涉及时间积分和皮秒 喷射冷却物质的时间分辨光谱。 在 首先，皮秒光谱学将被应用于研究 电子基态振动能流 分子的流形 他感兴趣的第二个主要领域是 （最近观察到的）旋转相干性的应用 高分辨率分子光谱学的现象， 大分子转动态变化碰撞的研究 物种 在光谱学研究中， 将使用这种效应来获得亚多普勒、兆赫 旋转常数的分辨率测量 分子复合物和簇，目的是阐明 物种的结构。 他感兴趣的第三个领域是 喷射冷却的、孤立的 过渡金属配合物离子。 这项工作很重要，因为它涉及到能量 在分子中流动。 例如，如何快速 振动能量一旦以特定模式沉积， 在分子中重新分布， 对理解化学反应性至关重要。

Dr. Felker plans to carry out a program of research which falls into three areas, all involving time-integrated and picosecond time-resolved spectroscopy on jet-cooled species. In the first, picosecond spectroscopy will be applied to the study of vibrational energy flow in the electronic ground-state manifolds of molecules. His second major area of interest is the application of the (recently observed) rotational coherence phenomenon to high-resolution molecular spectroscopy and to studies of the rotational state-changing collisions of large species. In the spectroscopic studies, rotational coherence effects will be used to obtain sub-Doppler, megahertz resolution measurements of the rotational constants of molecular complexes and clusters, with the aim of elucidating the structures of the species. His third area of interest is the spectroscopy and dynamics of jet-cooled, isolated transition-metal coordination complex ions. This work is important because it involves looking at energy flow within molecules. Questions such as how rapidly vibrational energy once deposited in a specific mode is redistributed in a molecule and just where it ends up are of fundamental importance to understanding chemical reactivity.