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arXiv 2201.09988physics.plasm-ph
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从喷气turbulence成像对等离子体和中性波动的深度模拟

Deep modelling of plasma and neutral fluctuations from gas puff turbulence imaging

A. Mathews, J. L. Terry, S. G. Baek, J. W. Hughes, A. Q. Kuang, B. LaBombard, M. A. Miller, D. Stotler, D. Reiter, W. Zholobenko, M. Goto

摘要:

湍流在设定边界等离子体条件中的作用目前是聚变能反应堆设计中的一个关键不确定因素。为了稳健地诊断边缘湍流,我们开发并演示了一种技术,通过一种新的集成深度学习框架将HeI线辐射的亮度测量转化为局部等离子体波动,该框架结合了中性输运物理和碰撞辐射理论,用于氦原子中的$3^3 D - 2^3 P$跃迁。实验有效性的原则进行审查,说明这种电离气体的湍流分析是可转移到磁化和非磁化的环境与任意几何形状。基于Alcator C-Mod托卡马克上的快速相机数据,我们提出了第一个二维的湍流电子密度,电子温度和中性密度的实验测量,揭示了在聚变等离子体中使用一个单一的谱线的阴影效应。

英文摘要:

The role of turbulence in setting boundary plasma conditions is presently a key uncertainty in projecting to fusion energy reactors. To robustly diagnose edge turbulence, we develop and demonstrate a technique to translate brightness measurements of HeI line radiation into local plasma fluctuations via a novel integrated deep learning framework that combines neutral transport physics and collisional radiative theory for the $3^3 D - 2^3 P$ transition in atomic helium. The tenets for experimental validity are reviewed, illustrating that this turbulence analysis for ionized gases is transferable to both magnetized and unmagnetized environments with arbitrary geometries. Based upon fast camera data on the Alcator C-Mod tokamak, we present the first 2-dimensional time-dependent experimental measurements of the turbulent electron density, electron temperature, and neutral density revealing shadowing effects in a fusion plasma using a single spectral line.

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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