Characterization of a 3-Phase a.c. Free Burning Arc Plasma

作     者：夏维东 Laurent FULCHERI Jose GONZALEZ-AGUILAR 李辉 Thomas M. GRUENBERGER 

作者机构：University of Science" and Technology of China Hefei 230027 China. Centre for Energy Studies Ecole des Mines de Paris Rue Claude Daunesse F-06904 Sophia Antipolis France University of Science and Technology of China Hefei 230027 China. 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2006年第8卷第2期

页      面：156-163页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China (No. 10375065) Anhui Natural Science Foundation (03045102) Europeam Commission projects NanoComp HPRN-CR-2000-0037 PlasmaCarb G5RD-CT-1999-00173 

主　　题：3-phase AC arc plasma free arc arc motion arc commutating arc instabilities 

摘      要：A 3-phase a.c. arc plasma reactor with large volume plasma has been developed for the synthesis of new carbon nano-structures. One of the main characteristics of the plasma system is related to the absence of a fixed neutral point. This gives rise to a rich and complex phenomenology related to instabilities and arc motion since the arcs are ＂burning＂ freely in the gas flow between the three electrodes. This paper is dedicated to the analysis of the behavior of such a system under typical conditions using argon and nitrogen as plasma gases. A classification of are configuration, arc commutating, arc interaction, arc motion and arc instabilities are discussed based on ultra high-speed cine camera analysis. A simple model describing the time evolution of the system is also presented and compared with the experimental measurements. The results show that an adequate control could allow the improvement of the overall system.