Measurements of different wave phenomena at the plasma boundary during auxiliary heating experiments on TEXTOR were performed to elucidate some the mechanisms responsible for ICRF-induced effects on the edge plasma and on plasma-wall interactions. Capacitive probes capable of withstanding high heat loads were used. Excited waves were studied during carbonized and boronized wall conditions in TEXTOR. Apart from at the r.f. generator frequency, waves were also detected at the harmonic frequencies due to sheath effects at the ICRF antenna. Furthermore, waves at half-harmonic frequencies were also excited under certain conditions.
TEXTORにおける補助加熱実験中に、プラズマ境界での様々な波動現象の測定を行い、エッジプラズマおよびプラズマ・壁相互作用に対するICRF誘起効果の原因となるメカニズムの解明を試みた。高い熱負荷に耐えうる容量性プローブを使用した。炭素被覆およびホウ素被覆の壁条件下で、励起された波動の測定を行った。高周波発生器の周波数における波動に加えて、ICRFアンテナでのシース効果により高調波周波数でも波動が検出された。さらに、特定の条件下では半高調波周波数でも波動が励起された。