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The physics of burn in magnetized deuterium-tritium plasmas: spherical geometry

R.D. Jones, W.C. Mead1986年被引用 43Nuclear FusionIF 3出版社

There is a large region of density-temperature space in which the effects of a magnetic field on heat transport and alpha-particle mobility are significant and the magnetic pressure is small compared with the pressure of a deuterium-tritium plasma. Spherical fusion burn in this regime is examined. It is found that for volume burn, magnetic fields can greatly increase the yield. In regimes where propagating burn does not occur, the burn can be enhanced by a magnetic field. In regimes where propagating deflagration would normally occur in the absence of a magnetic field, magnetic fields actually degrade the cross-field propagation. A detonation wave is harder to ignite in the presence of a magnetic field. Once a detonation wave is ignited, no change in the propagation speed is produced by applying a magnetic field.

日本語訳

密度-温度空間の広い領域において、磁場が熱輸送とアルファ粒子の移動に及ぼす影響は顕著であり、磁気圧は重水素-トリチウムプラズマの圧力に比べて小さい。この領域における球状核融合燃焼を考察する。体積燃焼では、磁場によって収量が大幅に増加し得ることが見出された。伝播燃焼が生じない領域では、磁場によって燃焼を促進できる。磁場が存在しない場合に伝播性デフラグレーションが通常発生する領域では、磁場は実際には横断方向の伝播を劣化させる。デトネーション波は、磁場が存在する場合、着火がより困難である。しかし、一旦デトネーション波が着火すると、磁場を印加しても伝播速度に変化は生じない。

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TritiumDeuteriumDeuterium-tritium
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