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One-dimensional simulation on stability of detached plasma in a tokamak divertor

机译：托卡马克分流器中游离等离子体稳定性的一维模拟

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The stability of the radiation front in the scrape-off layer (SOL) of a tokamak is studied with a one-dimensional fluid code: the time-dependent transport equations are solved in the direction parallel to a magnetic field line. As the energy from the core into the SOL plasma is reduced, stable attached solutions change into stable detached solutions. Whenever such stable detached states are attained, the strong radiation front is in contact with or at a small distance from the divertor target. When the input energy is decreased further and total losses become larger than the input power, the radiation front starts to move towards the X-point, cooling the SOL plasma. In such a case, no solutions for the radiation front resting in the divertor channel are observed in our parameter space. This qualitatively corresponds to the results of tokamak divertor experiments which show the movement of the radiation front. [References: 22]
机译：用一维流体代码研究了托卡马克刮除层（SOL）中辐射锋的稳定性：在平行于磁力线的方向上求解了与时间有关的传输方程。随着从核到SOL等离子体的能量减少，稳定的附着溶液变为稳定的分离溶液。每当达到这种稳定的分离状态时，强辐射锋面就与偏滤器目标接触或相距一小段距离。当输入能量进一步降低并且总损耗变得大于输入功率时，辐射前沿开始朝X点移动，从而冷却SOL等离子体。在这种情况下，在我们的参数空间中，没有观察到辐射前沿停留在分光器通道中的解决方案。这在质量上与托卡马克分流器实验的结果相对应，该实验显示了辐射锋的运动。 [参考：22]

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