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Fusion chain reaction – a chain reaction with charged particles

A. Peres, D. Shvarts1975年被引用 22Nuclear FusionIF 3出版社

When a DT-plasma is compressed to very high density, the particles resulting from nuclear reactions give their energy mostly to D and T ions, by nuclear collisions, rather than to electrons as usual. Fusion can thus proceed as a chain reaction, without the need of thermonuclear temperatures. In this paper, we derive relations for the suprathermal ion population created by a fusion reaction. Numerical integration of these equations shows that a chain reaction can proceed in a cold infinite DT-plasma at densities above 8.4 × 1027 ions · cm−3. Seeding the plasma with a small amount of 6Li reduces the critical density to 7.2 × 1027 ions · cm−3 (140 000 times the normal solid density).

日本語訳

DTプラズマが非常に高密度まで圧縮されると、核反応によって生じた粒子は、通常のように電子ではなく、主にDイオンとTイオンへ核衝突によってエネルギーを付与する。これにより、熱核温度を必要とせずに、核融合は連鎖反応として進行し得る。本論文では、核融合反応によって生成された超熱イオン集団に関する関係式を導出する。これらの方程式の数値積分により、密度が8.4 × 10²⁷ ions・cm⁻³を超える冷たい無限DTプラズマ中では連鎖反応が進行し得ることが示される。さらに、プラズマに少量の⁶Liを添加することで、臨界密度は7.2 × 10²⁷ ions・cm⁻³(通常の固体密度の140,000倍)まで低下する。

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