Fundamental Physical and Chemical Investigations of Electron-Beam Plasmas

CTS-0626302奖项摘要标题：电子束等离子体的基本化学和物理研究电子束等离子体在潮湿空气中的基本物理将在纽约州立大学环境科学和林业校区和密西西比州立大学进行研究。 主要研究者和共同主要研究者还将研究这些等离子体中空气污染物破坏的基本化学机制。近红外光腔衰荡光谱将用于分析OH自由基，OH自由基是等离子体中污染物降解的关键物种，是等离子体诊断的有力工具。 除了确定三维OH浓度分布，OH吸收光谱的线形将被研究，以确定气体动力学温度和调查等离子体的热力学。为了深入了解限制或促进污染物销毁的因素，将测量几种代表性空气污染物的销毁效率，沿着其降解产物的特性和产量。 这些见解将通过对等离子体化学的广泛动力学建模来量化。该研究将为湿空气等离子体中的化学产生经验证的化学模型，这些模型将以一种有助于构建冷凝模型的方式广泛使用。 这些压缩模型可以有效地结合起来，与流体动力学的计算模型，这反过来，将使这些非热等离子体的化学和运输的综合治疗。 广泛影响：电子束等离子体在去除空气流中的污染物和毒素方面具有巨大的潜在应用，这项研究将提供一系列基础知识，支持未来将电子束等离子体广泛应用的努力。 此外，对研究生教育的支持将产生额外的影响。

CTS-0626302 Award AbstractTitle: Fundamental Chemical and Physical Investigations of Electron-Beam PlasmasThe fundamental physics of electron-beam plasmas in humid air will be investigated at the Environmental Science and Forestry campus of SUNY and at Mississippi State University. The principal investigator and co-PI will also investigate the fundamental chemical mechanism of destruction of airborne pollutants in these plasmas. Cavity ringdown spectroscopy in the near infrared will be used to analyze OH radical.This radical is a key species for initiating degradation of pollutants in plasmas and is a powerful tool for plasma diagnostics. In addition to determining three-dimensional OH concentration distributions, lineshapes of OH absorption spectra will be studied to determine gas kinetic temperature and investigate the thermodynamics of the plasma. To obtain insights into factors limiting or enhancing destruction of pollutants, destruction efficiencies of several representative airborne pollutants will be measured, along with the identities and yields of their degradation products. These insights will be quantified with extensive kinetic modeling of the plasma chemistry.The research will produce validated chemical models for chemistry in humid air plasmas, which will be made widely available in a manner that would lend itself to the construction of condensed models. These condensed models could be combined efficiently with computational models of fluid dynamics, which, in turn, would enable integrated treatments of chemistry and transport in these non-thermal plasmas. Broad impacts: Electron-beam plasmas have enormous potential application for removing pollutants and toxins from air streams, and the research will provide a body of fundamental knowledge that will support future efforts to bring electron-beam plasmas into widespread use. In addition, support of graduate student education will provide additional impact.