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High thermonuclear energy gains with a low tritium inventory for inertially confined fusion

S. Skupsky1978年被引用 11Nuclear FusionIF 3出版社

Calculations were performed to investigate how the thermonuclear energy gain for inertially confined fusion varies as a function of the tritium inventory. Results showed that for large ρR pellets (25 g/cm2) the yield was relatively insensitive to the D: T ratio, so that a reduction by a factor of five in the amount of tritium produced only a 15% reduction in yield. An attempt was made to further reduce the sensitivity by replacing some of the deuterium by 6Li. The idea was to breed tritium by neutron capture within the pellet and then to burn it in situ. However, the breeding rate was found to be too slow for this process to make any significant contribution to the burn. Lithium was not able to improve upon deuterium as a fuel.

日本語訳

計算は、慣性閉じ込め核融合における熱核エネルギー利得がトリチウムインベントリの関数としてどのように変化するかを調べるために実施された。結果は、大きなρRペレット(25 g/cm²)の場合、収量はD:T比に対して比較的感受性が低く、トリチウム量を5分の1に減らしても収量の減少はわずか15%にとどまることを示した。感受性をさらに低減する試みとして、重水素の一部を6Liに置き換える方法が検討された。その考え方は、ペレット内で中性子捕獲によりトリチウムを増殖させ、その場で燃焼させるというものであった。しかし、増殖速度は遅すぎて、このプロセスが燃焼に有意に寄与することはできなかった。リチウムは燃料として重水素を改善することはできなかった。

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