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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >LOCKED MODES INDUCED PLASMA-WALL INTERACTIONS IN RFX
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LOCKED MODES INDUCED PLASMA-WALL INTERACTIONS IN RFX

机译:锁定模式导致RFX中的等离子体-壁相互作用

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In the RFX reversed field pinch (R = 2 m, n = 0.45 m) the plasma-wall interaction has been characterised in all of the discharges by the presence of the locking both in phase and in the laboratory frame of unstable MHD modes, These locked modes cause a helical deformation of the magnetic surfaces driving large power fluxes onto the wall. The plasma edge is severely perturbed: a power density loading as high as 100 MW m(-2) may locally be exceeded, the surface of the plasma facing components reach the sublimation temperature, the impurity release and the power radiated locally increase by a factor of similar to 100, large fluctuations in the electron density develop and halo currents flow in the inconel vacuum vessel. It is estimated that the locked modes are responsible for losses that may amount to up to about 30% of the total power input. [References: 12]
机译:在RFX反向场收缩中(R = 2 m,n = 0.45 m),在所有放电中,等离子体-壁相互作用的特征是存在同相和不稳定MHD模式的实验室框架中的锁定,这些锁定模式会引起磁性表面的螺旋形变形,从而将大功率通量驱动到墙上。等离子体边缘受到严重干扰:可能会局部超过高达100 MW m(-2)的功率密度负载,面对等离子体的组件表面达到升华温度,杂质释放和局部辐射的功率增加了一个因子当电导率接近100时,电子密度会出现较大的波动,并且晕圈电流会在铬镍铁合金真空容器中流动。据估计,锁定模式造成的损耗可能高达总输入功率的30%。 [参考:12]

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