非均匀磁场中多匝螺旋天线耦合的螺旋波等离子体蓝芯放电特性
DOI:
https://doi.org/10.18686/cncest368关键词:
螺旋波等离子体；放电模式；蓝芯；耦合天线；功率沉积摘要
本研究采用四匝螺旋天线在非均匀磁场中产生高密度螺旋波等离子体。通过调整天线的轴向位置（6 cm、12 cm 和 18 cm），可分别实现7.69 G、30.77 G和123.08 G的磁场强度。实验发现，在300 W射频功率和18 cm天线位置条件下出现了蓝芯现象。蓝芯模式下，600 W时等离子体密度可达2 × 1019 m−3，天线耦合效率达90%。基于放电诊断结果，本文进一步讨论了功率耦合机制。
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