MRI: Development of a Chirped-Pulse, Fourier-Transform mm-Wave Pulsed Uniform Supersonic Flow Spectrometer

MRI：啁啾脉冲、傅立叶变换毫米波脉冲均匀超声速流谱仪的开发

• 批准号: 1126380
• 负责人: Arthur Suits
• 金额: $ 69.53万
• 依托单位: Wayne State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1126380&HistoricalAwards=false
• 关键词: MRI; Development; Chirped; Pulse; Fourier

With this award from the Major Research Instrumentation (MRI) program Professor Arthur Suits from Wayne State University and colleague Robert Field from the Massachussetts Institute of Technology will develop a spectrometer that will join two powerful technologies: ultrabroad band chirped-pulse, Fourier-transform microwave spectroscopy and pulsed uniform supersonic flows obtained from a Laval (convergent-divergent) nozzle. This combination has the potential to offer a nearly universal detection method for near-nascent species thermalized at 30-50 K, that can deliver quantitative measurements of reaction intermediates, excited states, and vibrational distributions. The proposal is aimed at enhancing research training and education at all levels, especially in areas such as (a) detection of isomer and conformers, (b) quantitative detection and spectroscopic charaterization of unstable reaction intermediates, product vibration distributions, and molecular excited states, as well as (c) reaction dynamic, kinetics, combustion and atmospheric chemistry, physics and astrochemistry.This unique spectrometer combines two powerful new techniques using sophisticated electronics developed for the communications industry. The combination results in something new: an instrument that can detect absolute numbers of trace amounts of unstable reaction products or excited states of molecules, and at the same time determine their structure: combining spectroscopy (giving structural information) and dynamics (revealing details of the reactive events). These unique attributes indicate that the new instrument will have broad applicability across many fields. During development, construction, testing and commissioning of the instrument many students will participate.

有了这项来自主要研究仪器（MRI）计划的奖项，来自州立大学州立大学韦恩的亚瑟教授和来自麻省理工学院的同事罗伯特·菲尔德将开发一种光谱仪，该光谱仪将结合两种强大的技术：超宽带啁啾脉冲、傅里叶变换微波光谱学和从拉瓦尔（收敛-发散）喷嘴获得的脉冲均匀超音速流。这种组合有可能为在30-50 K热化的近新生物种提供一种几乎通用的检测方法，可以提供反应中间体，激发态和振动分布的定量测量。该提案旨在加强各级的研究培训和教育，特别是在以下领域：（a）异构体和构象异构体的检测，（B）不稳定反应中间体、产物振动分布和分子激发态的定量检测和光谱表征，以及（c）反应动力学、动力学、燃烧和大气化学，这种独特的光谱仪结合了两种强大的新技术，使用为通信行业开发的先进电子技术。这种组合产生了一些新的东西：一种可以检测微量不稳定反应产物或分子激发态的绝对数量的仪器，同时确定它们的结构：结合光谱学（提供结构信息）和动力学（揭示反应事件的细节）。这些独特的属性表明，新文书将在许多领域具有广泛的适用性。在仪器的开发，建造，测试和调试过程中，许多学生将参与其中。