优化恒星器中的剩余流量

IF 2.1 3区 物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS
G.G. Plunk, P. Helander
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引用次数: 0

摘要

我们以优化恒星器为出发点,重新审视了静电极限下残留流的陀螺动理论。我们考虑了问题的一般初始条件,并确定了导致非日冕残余静电势的情况,即在通量面内有一个重要分量变化的残余静电势。我们研究了恒星器中 "中间残余 "的行为,它是测地声波模式阻尼消失后,但在非约束粒子轨道引起的较慢阻尼作用之前残余流动的量度。在准等动力学恒星器的情况下,由于通过优化实现了较小的轨道宽度,这种残余量特别大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The residual flow in well-optimized stellarators
The gyrokinetic theory of the residual flow, in the electrostatic limit, is revisited, with optimized stellarators in mind. We consider general initial conditions for the problem, and identify cases that lead to a non-zonal residual electrostatic potential, i.e. one having a significant component that varies within a flux surface. We investigate the behaviour of the ‘intermediate residual’ in stellarators, a measure of the flow that remains after geodesic acoustic modes have damped away, but before the action of the slower damping that is caused by unconfined particle orbits. The case of a quasi-isodynamic stellarator is identified as having a particularly large such residual, owing to the small orbit width achieved by optimization.
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来源期刊
Journal of Plasma Physics
Journal of Plasma Physics 物理-物理:流体与等离子体
CiteScore
3.50
自引率
16.00%
发文量
106
审稿时长
6-12 weeks
期刊介绍: JPP aspires to be the intellectual home of those who think of plasma physics as a fundamental discipline. The journal focuses on publishing research on laboratory plasmas (including magnetically confined and inertial fusion plasmas), space physics and plasma astrophysics that takes advantage of the rapid ongoing progress in instrumentation and computing to advance fundamental understanding of multiscale plasma physics. The Journal welcomes submissions of analytical, numerical, observational and experimental work: both original research and tutorial- or review-style papers, as well as proposals for its Lecture Notes series.
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