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Burn-up of fusion-produced tritons and 3He ions in PLT and PDX

W.W. Heidbrink, R.E. Chrien, J.D. Strachan1983年被引用 71Nuclear FusionIF 3出版社

The d(d,p)t and d(d,n) 3He fusion reactions produce 1 MeV tritons and 0.8 MeV 3He ions which can subsequently undergo d(t, n) α and d(3He,p) α fusion reactions. The magnitude of this triton and 3He ion 'burn-up' was measured on the PLT and PDX tokamaks by detection of the 14 MeV neutron and 15 MeV proton emission. In discharges with Bφ > 2 T, the measured 3He and triton burn-up is consistent (within a factor of three) with predictions based on classical theories of ion confinement and slowing down. In discharges with weaker toroidal fields but constant plasma current, the burn-up of both ions fell by more than a factor of ten so that the observed burn-up was significantly less than expected classically.

日本語訳

d(d,p)tおよびd(d,n)³He核融合反応は、1 MeVのトリトンと0.8 MeVの³Heイオンを生成し、これらはその後d(t,n)αおよびd(³He,p)α核融合反応を起こすことができる。このトリトンおよび³Heイオンの「燃焼」の大きさは、PLTおよびPDXトカマクにおいて、14 MeV中性子と15 MeV陽子の放出を検出することにより測定された。Bφ > 2 Tの放電では、測定された³Heおよびトリトンの燃焼は、イオンの閉じ込めと減速に関する古典論に基づく予測と(3倍以内の誤差で)一致した。より弱いトロイダル磁場であるがプラズマ電流が一定の放電では、両イオンの燃焼は10倍以上低下し、観測された燃焼は古典的に予測される値よりも有意に小さかった。

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