RUI: High Resolution Spectroscopy of Stable Molecular Species and Free Radicals

在这个由化学学部实验物理化学项目资助的项目中，Michael Jackson教授和威斯康星大学拉克罗斯分校的本科生将探测和测量远红外线（FIR）的光泵分子激光（OPML）发射。这些辐射将作为相干辐射源用于激光磁共振（LMR）和激光斯塔克光谱实验。FIR-LMR技术将用于研究双原子和三原子自由基，包括NH， ND, FeH, FeH2, FeD2， CoH和HF+。此外，一个Stark光谱仪将与OPML系统一起使用，以研究氨、氟化甲基、氯甲烷和类似分子的高能旋转态的电偶极矩。来自墨西哥、巴西和加拿大的访问学者将协助Jackson和他的学生记录LMR和Stark光谱。这些数据将与牛津大学的约翰·布朗教授小组合作进行分析。要研究的自由基具有基本的理论意义。高分辨率的光谱工作也将有助于探测星际云中的这些物种，并有助于理解它们形成的机制。这项研究将为拉克罗斯大学的本科生提供激光光谱学方面的优秀培训。这项工作的结果将在国家和国际会议上提出，并在科学文献中发表。

In this project, funded by the Experimental Physical Chemistry Program of the Division of Chemistry, Professor Michael Jackson and undergraduate students at the University of Wisconsin, La Crosse will detect and measure optically pumped molecular laser (OPML) emissions in the far-infrared (FIR). These emissions then will be used as coherent radiation sources in laser magnetic resonance (LMR) and laser Stark spectroscopy experiments. The FIR-LMR technique will be used to study diatomic and triatomic free radicals, including NH, ND, FeH, FeH2, FeD2, CoH, and HF+. In addition, a Stark spectrometer will be constructed for use with the OPML system to investigate the electric dipole moments of the high-energy rotational states of ammonia, methyl fluoride, methyl chloride and similar molecules. Visiting scholars from Mexico, Brazil, and Canada will assist Jackson and his students in recording the LMR and Stark spectra. The data will be analyzed in collaboration with the group of Professor John Brown of the University of Oxford. The free radicals to be studied are of fundamental theoretical interest. The high-resolution spectroscopic work also will facilitate the detection of these species in interstellar clouds and contribute toward the understanding of the mechanisms of their formation. The research will provide La Crosse undergraduates with excellent training in laser spectroscopy. The results of the work will be presented at national and international meetings and published in the scientific literature.