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arXiv 1701.02501physics.plasm-ph
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低碰撞仿星器自举电流和等离子体流速

Stellarator bootstrap current and plasma flow velocity at low collisionality

P. Helander, F. I. Parra, S. L. Newton

摘要:

计算了低碰撞仿星器等离子体的自举电流和流速。只要有可能,分析是在一个统一的方式在所有的低碰撞制度一般仿星器的几何形状,假设只有约束是足够好的等离子体近似在局部热力学平衡。它被发现,传统的表达式的离子流速度和自举电流在低碰撞限制是准确的,只有在$1/ν$ -碰撞制度,并需要修改在$\sqrtν$ -制度。由于有限的碰撞性的校正也进行了讨论,并发现规模为$ν^{2/5}$。

英文摘要:

The bootstrap current and flow velocity of a low-collisionality stellarator plasma are calculated. As far as possible, the analysis is carried out in a uniform way across all low-collisionality regimes in general stellarator geometry, assuming only that the confinement is good enough that the plasma is approximately in local thermodynamic equilibrium. It is found that conventional expressions for the ion flow speed and bootstrap current in the low-collisionality limit are accurate only in the $1/ν$-collisionality regime and need to be modified in the $\sqrtν$-regime. The correction due to finite collisionality is also discussed and is found to scale as $ν^{2/5}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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