Dipole Moments of Highly Vibrationally Excited HCN: A New Approach to Ultra-sensitive Stimulated Emission Pumping

高振动激发 HCN 的偶极矩：超灵敏受激发射泵浦的新方法

• 批准号: 0138514
• 负责人: Alec Wodtke
• 金额: $ 41.88万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0138514&HistoricalAwards=false
• 关键词: Dipole; Moments; Highly; Vibrationally; Excited

In this project funded by the Experimental Physical Chemistry Program of the Chemistry Division, Wodtke will use a new technique to study highly excited vibrational states of polyatomic molecules, with energies that bring them close to the reaction barrier. Hydrogen cyanide (HCN) will be used as a prototype system and will be studied by the combined techniques of stimulated emission pumping and electric hexapole focusing to obtain energy and dipole moment information in individual highly excited rotation-vibrational states. Such information will serve to better map out the wavefunctions for highly excited states especially for isomerizing transitions.This project addresses a major problem in contemporary physical chemistry, namely the characterization of molecules in excited states, high enough to affect reactions and isomerization transitions. Two separate techniques are combined in a novel way to obtain such information. Experiments on the prototype hydrogen cyanide molecule will be extended to other systems. The research will provide excellent training for graduate students and postdoctoral fellows in modern research techniques.

在这个由化学部实验物理化学项目资助的项目中，沃特克将使用一种新技术来研究多原子分子的高激发振动态，其能量使它们接近反应势垒。 氰化氢（HCN）将作为原型系统，通过受激发射泵浦和电六极聚焦的组合技术进行研究，以获得各个高激发旋转振动状态下的能量和偶极矩信息。这些信息将有助于更好地绘制高激发态的波函数，特别是异构化跃迁的波函数。该项目解决了当代物理化学中的一个主要问题，即激发态分子的表征，其高到足以影响反应和异构化跃迁。以一种新颖的方式组合两种独立的技术来获取此类信息。原型氰化氢分子的实验将扩展到其他系统。该研究将为研究生和博士后提供现代研究技术的良好培训。