固体燃料中非金属元素的激光诱导等离子体特性研究

项目名称： 固体燃料中非金属元素的激光诱导等离子体特性研究

项目编号： No.51476061

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 能源与动力工程

项目作者： 陆继东

作者单位： 华南理工大学

项目金额： 80万元

中文摘要： 激光诱导击穿光谱是实现固体燃料特性的快速/实时检测的潜在技术途径，其非金属元素的激光诱导等离子体特性的深刻理解和有效信息的充分提取是实现固体燃料特性精确定量测量的关键因素。本项目研究固体燃料激光诱导等离子体时空变化特性研究，揭示所研究的非金属元素各类光谱的形成机制和特征信息；探求对非金属元素化学形态和结构对等离子体物理形态以及光谱特性的影响规律，实现不同形态元素光谱特征的有效辨识；明确相关基团的形成机制和等离子体的化学反应途径，克服环境气氛对相应非金属元素光谱的影响；优化非金属元素的探测条件，发展适用于固体燃料中非金属元素和工业分析指标分析定量分析方法，为实现固体燃料特性激光诱导击穿光谱的有效快速、实时定量检测奠定基础。

中文关键词： 激光诱导击穿光谱；固体燃料；等离子体

英文摘要： Laser-induced breakdown spectroscopy（LIBS）is a potential technique to achieve rapid and on-line detection of solid fuel. To understand profoundly the characteristics of laser-induced plasma on nonmetal and to extract valid information were considered critical factors in accurate and quantitative determination. The exploration of temporal and spatial characteristics in laser-induced plasma is conducted to account for the spectralfeatures and the formation of concerned radical emissions. Nonmetallic chemical form and structure makes a difference in spectral characters and physical state of plasma.The influence of chemical form is studied to identify same element in disparate chemical form, reveal the chemical reaction pathway and explore formation mechanism of species in plasma. Formation of groups in molecules and pathway of chemical reactions are explored to surmount the effect of ambient air for nonmetal spectrum. Detection condition is optimized according to temporal and spatial characteristics of plasma. Various quantitative methods are performed to improve detection precision on nonmetal elements concentration and proximate analysis index in solid fuel. As a result,above researches lay a foundation to achieve rapid and on-line determination of solid fuel within tolerant precision in industry by LIBS.

英文关键词： laser-induced breakdown spectrscopy;solid fuel;plasma