Spectroscopy of Diatomic Molecules at Long Range

远距离双原子分子光谱

• 批准号: 9222801
• 负责人: William Stwalley
• 金额: $ 24.6万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-01 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222801&HistoricalAwards=false
• 关键词: Spectroscopy; Diatomic; Molecules; Long; Range

In this project in the Experimental Physical Chemistry Program of the Chemistry Division, Stwalley will study the electronic spectroscopy of diatomic alkali molecules in "long range states" in which internuclear distances are larger than about 10 Angstroms. Knowledge of the energy levels in this region gives information about long-range potential energy curves, which is important for understanding photodissociation and associative ionization processes. Optical-optical double resonance (OODR) and All-Optical Triple Resonance (AOTR) will be used to study the spectroscopy and dynamics of these processes state selectively. %%% In the experiments being conducted in this project, lasers are used to determine various properties of diatomic molecules as well as to study light-induced processes in these two-atom molecules. Among the information to be gathered are data regarding photodissociation (bond-breaking induced by light) and associative ionization (bond-forming with attendant loss of an electron). Fundamental information such as this has impact on our understanding of a variety of areas, including atmospheric processes and materials processing using lasers or plasmas.

在化学系实验物理化学项目的这个项目中，Stwalley 将研究双原子碱分子在“长程态”下的电子光谱，其中核间距大于约 10 埃。 了解该区域的能级可以提供有关长程势能曲线的信息，这对于理解光解离和缔合电离过程非常重要。 光学-光学双共振（OODR）和全光三重共振（AOTR）将用于选择性地研究这些过程状态的光谱和动力学。 %%% 在该项目进行的实验中，激光用于确定双原子分子的各种特性以及研究这些双原子分子中的光诱导过程。 要收集的信息包括有关光解离（光引起的键断裂）和缔合电离（形成键并伴随电子损失）的数据。 诸如此类的基本信息会影响我们对各个领域的理解，包括大气过程和使用激光或等离子体的材料加工。