Development of a New Ion-Molecule Reaction Dynamics Imaging Apparatus for Chemistry Research

开发用于化学研究的新型离子分子反应动力学成像设备

• 批准号: 0110103
• 负责人: Kent Ervin
• 金额: $ 35.55万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-10-01 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0110103&HistoricalAwards=false
• 关键词: Development; New; Ion; Molecule; Reaction

With support from the Major Research Instrumentation (MRI) and the Chemistry Research Instrumentation and Facilities (CRIF) Programs, Prof. Kent M. Ervin of the University of Nevada in Reno will develop an ion-molecule reaction dynamics imaging apparatus for chemistry research. This new analytical tool will falicitate investigations of the dynamics and energetics of ion-molecule reactions. In particular, it will allow the measurement of total reaction cross sections and product velocity and angular distributions for ion-molecule reactions with both high sensitivity and high energy and angular resolution. The design calls for crossed ion and molecular pulsed beams with three major components: a quadrupole ion trap source; a reflectron time-of-flight mass spectrometer; and a velocity mapped ion imaging detector. Applications include fundamental investigations of reaction dynamics as well as ion and neutral thermochemistry. Greater accuracy and precision in energetics measurements will be possible compared with traditional instruments because of the high-resolution measurement of the kinetic energies of products. The instrumentation design is potentially attractive for future analytical chemistry applications - for example, for on-the-fly energy-selective collision-induced dissociation analysis in gas chromatography/mass spectrometry or from electrosprayed ions in liquid chromatography/mass spectrometry.

在主要研究仪器（MRI）和化学研究仪器和设施（CRIF）项目的支持下，肯特·M.教授。位于里诺的内华达州大学的欧文将开发一种用于化学研究的离子分子反应动力学成像装置。 这种新的分析工具将falicitate离子分子反应的动力学和能量学的调查。 特别是，它将允许测量总的反应截面和产品的速度和角分布的离子分子反应具有高灵敏度和高能量和角分辨率。 该设计要求交叉离子和分子脉冲束有三个主要组成部分：四极离子阱源;反射飞行时间质谱仪;和速度映射离子成像检测器。 应用包括反应动力学以及离子和中性热化学的基础研究。 与传统仪器相比，由于产品动能的高分辨率测量，能量测量的准确性和精确度将更高。 该仪器设计对于未来的分析化学应用具有潜在的吸引力-例如，对于气相色谱/质谱中的飞行中能量选择性碰撞诱导解离分析或液相色谱/质谱中的电喷雾离子。