微波液相等离子体发射光谱研究  

Study on the Emission Spectrum of Microwave Plasma in Liquid

作　　者：王波[1] 孙冰[1] 朱小梅[1] 严志宇[1] 刘永军[1] 刘慧[1] 

机构地区：[1]大连海事大学环境科学与工程学院,辽宁大连116026

出　　处：《光谱学与光谱分析》2014年第5期1182-1185,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(NSFC-10875019;41005079);中央高校基本科研业务费项目资助

摘　　要：为了研究微波液相放电等离子体的基本物理现象和放电特性,为微波液相放电技术奠定一定的理论基础,利用发射光谱仪对水中微波液相放电及放电中产生的活性粒子进行了检测,同时对微波液相放电光谱数据统计方法进行了研究。利用发射光谱仪结合数控摄像机对微波液相放电过程中起始放电和稳定放电两个过程进行了同步检测拍摄。实验结果发现:微波液相等离子体发射光谱强度波动较大,光谱强度可以用10个光谱数据点进行平均计算;放电的强度在一定程度上可以由等离子体区域面积所反映,尽管如此,等离子体区域面积和羟基自由基发射光谱强度的变化梯度并不一致,这主要是因为在放电过程中,放电强度不仅体现在等离子体区域面积,同时也与等离子体区域的亮度有关。After the technology of microwave discharge in liquid is realized for the first time in China ,the basic physical phenom-ena and characteristic of microwave discharge in liquid is studied in order to lay a theoretical foundation of research on microwave discharge in liquid .In the present paper ,the active particles generated by microwave discharge in liquid were detected using the emission spectrometer ,and the statistical method of spectrum data of microwave discharge in liquid was also studied .The emis-sion spectrometer and numerically controlled camera were used to detect synchronously the process of the initial discharge and stable discharge of microwave discharge in liquid .The results show that ：the emission intensity of microwave plasma in liquid has a large fluctuation ,and the spectrum intensity can be calculated using the average of 10 spectrum data points .The intensity of discharge is reflected by the plasma area in a certain extent ,however ,the variation gradient of the intensity of discharge is dif-ferent from that of the plasma area .This is mainly because that ,in the process of discharging ,the discharge intensity is not only reflected by the plasma area ,but also reflected by the brightness of the plasma .

关 键 词：微波液相放电 发射光谱 等离子体面积 平均统计 

分 类 号：O657.3[理学—分析化学]