论文标题
融合级等离子体在托卡马克热猝灭中的融合级冷却
Staged cooling of a fusion-grade plasma in a tokamak thermal quench
论文作者
论文摘要
在Tokamak中断中，磁连接长度与等离子体平均无路径相当甚至短，平行传输可以主导能量损失，并且核心等离子体的热淬灭经过四个相（阶段），这些阶段（阶段）具有不同的温度范围和持续时间。当核心等离子体保持几乎无碰撞时，主温度下降发生，并行电子温度$ t_ {e \ Parallel} $在时间$ t $中下降为$ t_ {e \ parallel} \ propto t^{ - 2} $，并且与开放磁性磁性磁性磁性磁性磁场线的降低时间，并以冷却时间缩放。这些令人惊讶的物理量表是有效抑制了其他有限的无碰撞血浆中平行电子热传导的结果，这与迄今为止在磁性无碰撞的血浆中沿磁场沿着电子热传导迄今已知的根本不同。
In tokamak disruptions where the magnetic connection length becomes comparable to or even shorter than the plasma mean-free-path, parallel transport can dominate the energy loss and the thermal quench of the core plasma goes through four phases (stages) that have distinct temperature ranges and durations. The main temperature drop occurs while the core plasma remains nearly collisionless, with the parallel electron temperature $T_{e\parallel}$ dropping in time $t$ as $T_{e\parallel}\propto t^{-2}$ and a cooling time that scales with the ion sound wave transit time over the length of the open magnetic field line. These surprising physics scalings are the result of effective suppression of parallel electron thermal conduction in an otherwise bounded collisionless plasma, which is fundamentally different from what are known to date on electron thermal conduction along the magnetic field in a nearly collisionless plasma.
