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Two-component r.f. regime of D+He3 fusion with lowered neutron yield

A V Longinov, S S Pavlov, K N Stepanov1992年Plasma Physics and Controlled FusionIF 2.2出版社

Various scenarios of r.f. plasma heating using fast magnetosonic and ion cyclotron waves (Bernstein modes) employing resonances at the fundamental cyclotron frequency and its harmonics for minority ions for achieving the two-component regime of fusion burning in a D+He3 plasma in toroidal and open traps are suggested. It is shown that using the omega =2 omega cd resonance for a deuteron minority in a He3 plasma and the omega = omega cHe resonance for a He3 minority in a D plasma for ion Bernstein waves with high specific powers allows one to realize the two-component regime with a power gain factor of Q approximately 0.2-0.3 at the bulk ion temperature T approximately 20-30 keV. In this case the necessary energy lifetime of the plasma appears to be an order of magnitude less than that required for the conventional scenario of fusion burning in a plasma with a Maxwellian distribution of ions (D+He3, T=60-70 keV).

日本語訳

様々な高速磁気音波およびイオンサイクロトロン波(バーンスタイン・モード)を用いた高周波加熱のシナリオが提案されており、基本サイクロトロン周波数およびその高調波における共鳴をマイノリティイオンに対して利用し、トロイダルおよび開放型閉じ込め装置におけるD+He3プラズマの二成分核融合燃焼方式を実現する。重水素マイノリティをHe3プラズマ中で用いる場合のω=2ω_cd共鳴、およびHe3マイノリティをDプラズマ中で用いる場合のω=ω_cHe共鳴を利用したイオンバーンスタイン波により、高い比出力を実現し、バルクイオン温度T≈20-30 keVにおいて電力増倍率Q≈0.2-0.3の二成分方式を達成できることが示される。この場合、プラズマの必要エネルギー閉じ込め時間は、マクスウェル分布を有するイオン(D+He3、T=60-70 keV)を用いた従来の核融合燃焼シナリオに必要な値より一桁小さくなる。

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