Low-Energy Vibrational Excitation of Molecules by Electron Impact (Physics)

电子碰撞对分子的低能振动激发（物理）

• 批准号: 8805972
• 负责人: Michael Morrison
• 金额: $ 21.2万
• 依托单位: University of Oklahoma Norman Campus
• 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: 1988-07-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8805972&HistoricalAwards=false
• 关键词: Low; Energy; Vibrational; Excitation; Molecules

Theoretical studies are proposed of the excitation of a molecule by an electron whose incident energy is near the threshold of that excitation. There are serious discrepancies with experiment, including the observation of unexplained threshold structures. The full quantum physics of the system enters the description of these processes. The goal here is the development of a scattering theory for this domain. There are three main components of the investigation. (1) Development of parameter-free model polarization/correlation potentials. (2) Development of new approximate theoretical treatments of the quantum dynamics of near-threshold collisions. (3) Examination of the discrepancies between existing theoretical and experimental cross sections for low-energy excitations.

对入射能量接近激发阈值的电子对分子的激发进行了理论研究。这与实验有严重的差异，包括观察到了无法解释的阈值结构。系统的完整量子物理进入了对这些过程的描述。这里的目标是发展这一领域的散射理论。调查分为三个主要部分。(1)无参数模型极化/相关势的发展。(2)发展了近阈值碰撞量子动力学新的近似理论处理方法。(3)对现有的低能激发的理论截面和实验截面之间的差异进行了检验。