The Analysis of Probe I-V Characteristics in a Magnetized Low-Temperature Plasma

✍ Scribed by V.I. Demidov; S.V. Ratynskaia; K. Rypdal

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 114 KB
• Volume: 41
• Category: Article
• ISSN: 0005-8025
• DOI: 10.1002/1521-3986(200109)41:5<443::aid-ctpp443>3.0.co;2-k

✦ Synopsis

The validity of probe theories based on the classical electron transport to probes in lowtemperature magnetized plasma of the toroidal device "Blaamann "has been demonstrated. The analysis was carried out for the conditions when global transport of charged particles in the device is anomalous, namely for magnetic field up to 0.3 T and pressure range 0.1 -1 Pa. It was shown also that for the magnetic field larger than 0.1 T probes longer than 15 mm provide electron saturation current practically independent of probe potential, hence more accurate measurements of the plasma parameters. The experiments have revealed that application of long probes oriented parallel to the magnetic field may cause an anomaly of the I-V characteristics in the sense that a local increase of the electron current appears near the plasma potential.