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首页> 外文期刊>Plasma and Fusion Research >Investigation of Toroidal Acceleration and Potential Acceleration Forces in EAST and J-TEXT Plasmas
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Investigation of Toroidal Acceleration and Potential Acceleration Forces in EAST and J-TEXT Plasmas

机译：EAST和J-TEXT等离子体中的环形加速度和潜在加速度的研究

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Experiments were performed on EAST and J-TEXT for ohmic plasmas with net counter- and co-current toroidal acceleration generated by density ramping-up and ramping-down. Core toroidal rotation is increasing with T e/ T i increasing in observed region ( r / a ≤ 0.3). There may be certain correlation between rotation variation and temporal change in density fluctuation intensity. Meanwhile, it is shown that core counter-current toroidal acceleration is gradually increased with the increase of ramp rate in electron density. Direction reversal from co- to counter-current of edge C4+ toroidal rotation is observed by ramp up in electron density. Additionally on EAST, net co-current toroidal acceleration was also formed by LHCD or ICRF. For the current experimental results, toroidal acceleration was between ?50 km/s2 in counter-current direction and 70 km/s2 in co-current direction. E φ may be one of the co-current toroidal forces, which may generate co-current toroidal acceleration,and acts on the plasma as a whole. On the other hand, electron-ion toroidal friction may be one of the counter-current toroidal forces, which may produce counter-current toroidal acceleration, because electrons move in counter-current direction in order to produce a toroidal plasma current.
机译：在EAST和J-TEXT上对欧姆等离子体进行了实验，该等离子体具有由密度增加和减少产生的净逆流和并流环形加速。在观察区域（r / a≤0.3），随着T e / T i 的增加，核心环面旋转增加。旋转变化和密度波动强度的时间变化之间可能存在一定的相关性。同时，表明随着电子密度的斜率的增加，芯的逆流环形加速度逐渐增加。通过电子密度的上升，可以观察到边缘C 4+ 环形旋转从顺流到逆流的反向。此外，在EAST上，LHCD或ICRF也形成了净并流环形加速。对于当前的实验结果，环形加速度在逆流方向上为？50 km / s 2 ，在顺流方向上为70 km / s 2 。 E φ可以是并流环形力之一，它可以产生并流环形加速度，并整体上作用于等离子体。另一方面，由于电子沿逆流方向运动以产生环形等离子体电流，所以电子-离子环形摩擦可能是逆流环形力之一，其可能产生逆流环形加速度。

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