Gyrokinetic simulations for turbulent transport of multi-ion-species plasmas in helical systems
Gyrokinetic simulations for turbulent transport of multi-ion-species plasmas in helical systems
复制标题
螺旋体系中多离子组分等离子体湍流输运的回转动力学模拟
DOI：
10.1063/1.5142405
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发表时间：
2020-05
影响因子：
2.2
通讯作者：
M. Nunami;M. Nakata;S. Toda;H. Sugama
中科院分区：
文献类型：
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作者：
M. Nunami;M. Nakata;S. Toda;H. Sugama
包括多离子粒子物种的磁约束等离子体在螺旋系统中的湍流输运，例如大型螺旋装置(LHD)[Takeiri等，Nucl.Fusion 57,102023(2017年)]及其等离子体轮廓敏感性通过局部通量管回转动力学模拟进行了研究。在多离子等离子体中，虽然每种粒子的热输运对等离子体温度梯度和密度梯度的敏感性略有不同，但粒子输运对等离子体温度和密度的径向梯度分布的依赖性却有很大的不同。此外，在具有碳杂质空穴结构的LHD等离子体中[Ida等人，等离子体物理。16,056111(2009年)]，杂质碳离子的湍流粒子传输通量在等离子体温度和密度的径向梯度分布的大范围内保持强劲的径向内向。
The turbulent transport of magnetic confinement plasmas including multi-ion-particle-species in helical systems such as the Large Helical Device (LHD) [Takeiri et al., Nucl. Fusion 57, 102023 (2017)] and their plasma profile sensitivities are investigated by local flux-tube gyrokinetic simulations. In the multi-ion-species plasmas, while the heat transport of each particle species has slightly different sensitivity towards the plasma temperature gradients and the density gradients, there exist quite different dependencies in the particle transport on the radial gradient profiles of the plasma temperatures and densities between each particle species. Furthermore, in the LHD plasma with the carbon impurity hole structure [Ida et al., Plasma Phys. 16, 056111 (2009)], the turbulent particle transport flux of the impurity carbon ion remains radially inward-directed robustly within the wide ranges of radial gradient profiles of the plasma temperatures and densities.