Usage of Displaced Current in Langmuir Probe Measurement

作     者：MING Zhang-Jian LI Hong CHEN Zhi-Peng LUO Chen XIE Jin-Lin LAN Tao LIU A-Di LIU Wan-Dong 明章健;李弘;陈志鹏;罗辰;谢锦林;兰涛;刘阿棣;刘万东

作者机构：CAS Key Laboratory of Basic Plasma PhysicsDepartment of Modern PhysicsUniversity of Science and Technology of ChinaHefei 230026 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2012年第29卷第7期

页      面：179-183页

核心收录：

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 10[医学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10675121,10705028 and 10835009 the ITER Domestic Program of China under Grant Nos 2009GB107000 and 2010GB107000 

主　　题：Probe electrode eliminate 

摘      要：We investigate the possibility of the usage of displaced current in Langmuir probe measurement theoretically and *** displaced current flows through the self-generated or artificial capacitance of the reference electrode under an alternative sweep *** can increase the total current afforded by the reference electrode,and eliminate the interference deriving from the finite plasma sheath resistance of the reference *** results in both theory and experiment lead to the conclusion that the usage of displaced current is valid and more efficient with a floating probe *** method is applied in some harsh plasma environments when the grounded chamber wall can easily be contaminated by the dielectric.