M. Nakamura, T. Cho, S. Kubo, T. Shimozuma, H. Kawai, Y. Yamazaki, T. Maekawa, Y. Terumichi, Shigetoshi Tanaka, Y. Hamada
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引用次数: 54
摘要
在WT-2中，在托卡马克放电结束时，向欧姆加热的等离子体中注入较低混合频率附近的射频功率P/sub rf/，产生射频驱动的持续电流等离子体，并在射频注入期间持续存在，环形电流(I/sub rf/)约为。10 kA)仅由低杂波产生，没有欧姆功率。射频驱动的电流产生效率高，在等离子体密度n/sub / e/左右时达到I/sub p// p/ sub rf/约等于0.9 kA/kW。=1.4 x 10/sup 12/ cm/sup -3/，密度越大效率越低。
TOROIDAL PLASMA CURRENT SUSTAINMENT BY LOWER HYBRID WAVES IN THE WT-2 TOKAMAK
By injecting rf power P/sub rf/ near the lower hybrid frequency into an Ohmically heated plasma near the end of tokamak discharge in the WT-2, an rf-driven current-sustained plasma is produced and continues to exist during the rf injection period, the toroidal current (I/sub p/approx.10 kA) being generated by the lower hybrid wave only without the Ohmic power. The efficiency of rf-driven current generation is high and attains I/sub p//P/sub rf/roughly-equal0.9 kA/kW at the plasma density n/sub e/approx. =1.4 x 10/sup 12/ cm/sup -3/, with somewhat lower efficiency at higher density.
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