Plasma Production Using An Asmussen Cavity In A Magnetic Field

Abstract

The density, temperature and flow speed of an argon plasma produced by an Asmussen cavity in a weak magnetic field is measured using Laser Induced Fluorescence and Langmuir probes. The sour is at one end of a main chamber that is in a magnetic mirror configuration, with pancake coils arranged at both the source end and the far end. The magnetic field at the source is below that required for ECR. The 2.45 GHz microwave resonant cavity has a diameter of 10.2 cm, with a 1.8 cm O.D. (1.35 cm I.D.) on-axis quartz tube within which the plasma is created, both of which are smaller than many of the Asmussen cavities described in the current literature.