Engineering Research Equipment Grant: Laser Ionization MassSpectrometer

这种独特的基于激光的仪器将使共振增强多光子电离（REMPI）光谱首次用于高温燃烧中几种关键反应中间体的质量选择性原位检测。REMPI技术能够检测到几种重要的中间物种，这些中间物种是其他基于激光的非侵入性方法难以监测的。这种仪器，目前还没有在任何其他实验室，将提供一个独特的机会，直接监测关键的反应中间体，如CH3， CH2, C2O， C2H和HCO在高温火焰中以百万分之一的灵敏度水平。为了满足日益增长的能源需求和安全处置危险废物，迫切需要这种有效的、受控的燃烧方法，而不会因有害副产品而污染环境。

This unique laser-based instrumentation will enable resonance- enhanced multiphoton ionization (REMPI) spectroscopy to be used for the first time for the mass selective in situ detection of several key reaction intermediates in high temperature combustion. REMPI techniques enable the detection of several important intermediate species that are not easily monitored by other laser-based noninstrusive methods. This instrumentation, not yet available at any other laboratory, will provide a unique opportunity for the direct monitoring of such key reaction intermediates as CH3, CH2, C2O, C2H, and HCO in high temperature flames at sub part-per-million sensitivity levels. Such methods for efficient, controlled combustion, without contamination of environment from harmful by-products, are urgently needed to meet increasing demands for energy and for the safe disposal of hazardous wastes.