磁约束等离子体的若干辐射磁流体力学问题研究概述

A Review of some Radiation Magnetohydrodynamics Problems in Magnetically Confined Plasma

在磁约束聚变等离子体中,等离子体辐射是其中的一个重要问题。当等离子体辐射功率达到一定比例时,会引起不稳定性,甚至导致等离子体破裂。在磁约束等离子体中,辐射磁流体力学主要涉及到的是由辐射引起的磁流体不稳定性,及其对等离子体约束的影响。目前仍存在一些关键性的问题,如密度极限、等离子体破裂过程中的辐射损失等,并且磁约束聚变等离子体中还没有完整的辐射磁流体动力学的数值模拟工作,因此,从事这方面的工作有望走在国际前沿。

Plasma radiation is one of the key issues in the magnetically con ned plasma.When the plasma radiation energy power exceeds some ratio, it will cause some instabilities,even lead to the plasma disruption. In the magnetically con ned plasma, radiation magneto-hydrodynamics mainly deals with magnetohydrodynamics instabilities due to the radiation,and their impact on the plasma con nement. There are still some critical problems on debate,such as density limit, the radiation loss during plasma disruption, and so on. So far, there is still not complete radiation magnetohydrodynamics simulation in the magnetically con ned plasma. Hence, it is possible to get important achievements in this eld.