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Velocity distribution functions and reactivity of D–T fusion plasma with spin-polarized fuel

Toshiki Takahashi, Yasuyuki Nakao2001年Fusion Engineering and DesignIF 1.7出版社

AbstractVelocity distribution functions and the reactivity are calculated for D–T fusion plasma with spin-polarized fuel. The distribution functions are classified by spin states. Binary collisions and the resonance with waves are taken into account as depolarization mechanisms in plasmas. Spin–orbit interactions are shown to have no deleterious effect. However, lower hybrid heating and current drive using GHz waves resonant with the spin precession frequency are found to cause complete depolarization, when δB/B0 (the ratio of the amplitude of the fluctuating magnetic field to the external field) exceeds 10−5. Thus electron heating may increase the retention of polarization. Other depolarization mechanisms in plasmas will be also discussed.

日本語訳

速度分布関数と反応度は、スピン偏極燃料を用いたD–T核融合プラズマに対して計算される。分布関数はスピン状態によって分類される。二体衝突および波動との共鳴は、プラズマ中の脱偏極機構として考慮される。スピン–軌道相互作用は有害な影響を及ぼさないことが示される。しかしながら、スピン歳差周波数と共鳴するGHz波を用いた低ハイブリッド加熱および電流駆動は、δB/B0(変動磁場の振幅と外部磁場の比)が10⁻⁵を超える場合、完全な脱偏極を引き起こすことが見出される。したがって、電子加熱は偏極の保持を増大させる可能性がある。プラズマ中の他の脱偏極機構についても議論されるであろう。

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