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Possibility of strong anomalous absorption of microwaves in electron cyclotron resonance heating experiments in fusion devices

E.Z. Gusakov, A.Yu. Popov2019年被引用 19Nuclear FusionIF 3出版社

The effect of strong anomalous absorption (up to three-quarters of the pump power) of microwaves in electron cyclotron resonance heating (ECRH) experiments in toroidal devices is predicted. It originates from the low-power-threshold two-plasmon parametric decay instability, for which the only effective saturation mechanism is provided by the pump wave depletion. This makes the power deposition profile different from that predicted by the linear theory and provides an alternative interpretation for its evident broadening observed on ECRH in toroidal devices.

日本語訳

トロイダル装置における電子サイクロトロン共鳴加熱(ECRH)実験において、マイクロ波の強い異常吸収(ポンプ波パワーの最大4分の3)の効果が予測される。これは、低パワー閾値の二プラズモン・パラメトリック崩壊不安定性に起因し、その唯一の有効な飽和機構はポンプ波の消耗によってもたらされる。これにより、パワー堆積プロファイルは線形理論によって予測されるものとは異なるものとなり、トロイダル装置におけるECRHで観測されるその明らかな広がりに対する代替的な解釈が提供される。

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Electron cyclotron heatingCyclotron resonanceElectron cyclotron resonance
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