Temporal Behaviour of ECR Plasmas Produced by a Lisitano Coil

Abstract
In order to clarify the mechanism of production of a plasma produced by electron cyclotron resonance heating (ECRH) using a Lisitano coil, the temporal behaviour of the plasma was measured in detail by a sampling method. It was found that the plasma is produced not only around the Lisitano coil but also near the center. The plasma density was also confirmed to attain a value above the cutoff density by measuring the field intensities of the microwaves.