High Resolution Studies of Jet-Cooled Large Molecules and Complexes Using Time-Domain and Interferometric Techniques

使用时域和干涉技术对喷射冷却大分子和复合物进行高分辨率研究

• 批准号: 8813470
• 负责人: Peter Felker
• 金额: $ 26.88万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-11-01 至 1991-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8813470&HistoricalAwards=false
• 关键词: Resolution; Studies; Jet; Cooled; Large

Dr. Peter Felker is supported by a grant from The Experimental Physical Chemistry Program to perform structural studies on large van der Waals complexes using newly developed picosecond laser spectroscopic techniques. These new techniques which are referred to as rotational coherence spectroscopy (RCS) and Fourier transform stimulated emission pumping spectroscopy (FT-SEPS) provide important information about the structure and ground state potential energy surfaces for this very interesting class of molecules. RCS is a picosecond time-domain method based on the rotational quantum beat phenomenon, and it will be used to measure excited state rotational constants of large van der Waals complexes, hydrogen-bonded complexes, and species with torsional degrees of freedom. The goal of these experiments is to obtain information pertaining to the geometries of important species that are difficult to study with other high resolution techniques. FT-SEPS, an interferometric version of stimulated emission pumping spectroscopy, will be applied to high resolution studies of the ground-state rovibrational level structures of similar species. Here, again, the elucidation of geometries via the determination of (ground-state) rotational constants is the primary goal of the experiment. A secondary goal is to obtain information about inter- and intra-molecular potential energy srufaces via high resolution vibrational spectroscopy.

Peter Felker博士得到了The 实验物理化学计划，以执行结构 用新发展的方法研究大货车德瓦耳斯配合物 皮秒激光光谱技术。 这些新 被称为旋转相干的技术 RCS和傅里叶变换受激发射 泵浦光谱（FT-SEPS）提供了重要的信息 关于结构和基态势能面 这类非常有趣的分子。 RCS是一种皮秒时域方法， 旋转量子拍现象，它将被用来 测量大货车der的激发态转动常数 Waals络合物、氢键络合物和具有 扭转自由度。 这些实验的目的是 以获得有关重要的几何形状的信息， 难以用其他高分辨率研究的物种 技术. FT-SEPS，一种受刺激的 发射泵浦光谱，将应用于高 基态振转能级的分辨研究 相似物种的结构。 在这里，再次阐明 几何通过确定（基态）旋转 常数是实验的主要目标。 次级 目的是获得分子间和分子内的信息， 高分辨振动势能面 谱