Fusion Science and Technology / Volume 51 / Number 2T / February 2007 / Pages 319-321
Technical Paper / Open Magnetic Systems for Plasma Confinement
Recently a magnetic divertor was introduced in the HIEI tandem mirror as an effective stabilization method, and the second harmonic resonance ion heating was examined. The purpose of the paper is to clarify the physical mechanism of the ion heating. RF field with large wave number was confirmed in the divertor configuration which could not be found out in the nondivertor configuration. Power absorption in the vicinity of the second harmonic resonance regions was also confirmed.