Title :
Effect of Finite Length on the Current-Voltage Characteristic of a Cylindrical Langmuir Probe
Author :
Hoskinson, A. ; Hershkowitz, Noah
Author_Institution :
Dept. of Eng. Phys., Wisconsin Univ., Madison, WI
Abstract :
Summary form only given. Cylindrical Langmuir probes are widely used in a variety of applications. Nevertheless, many non-ideal characteristics have not been fully investigated. In this work, we examine the relationships between probe length, radius, and plasma Debye length and their effect on experimentally obtained I-V curves. The plasmas investigated are low pressure weakly collisional plasmas generated by hot filaments. Plasma density and temperature errors due to these measurements are estimated for several different fitting methods. Probe construction methods to limit the non-idealities are suggested
Keywords :
Langmuir probes; plasma density; plasma sources; plasma temperature; current-voltage characteristics; cylindrical Langmuir probe; fitting methods; hot filaments; low pressure weakly collisional plasmas; plasma Debye length; plasma density; plasma temperature; Current measurement; Current-voltage characteristics; Focusing; Plasma applications; Plasma density; Plasma measurements; Plasma properties; Plasma sheaths; Plasma temperature; Probes;
Conference_Titel :
Plasma Science, 2005. ICOPS '05. IEEE Conference Record - Abstracts. IEEE International Conference on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-9300-7
DOI :
10.1109/PLASMA.2005.359074
