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arXiv 1612.04046physics.plasm-ph
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Alcator C-Mod托卡马克中的混沌边缘密度涨落

Chaotic edge density fluctuations in the Alcator C-Mod tokamak

Ziyan Zhu, Anne White, Troy Carter, Seung Gyou Baek, Jim Terry

摘要:

用0-模式反射计获得的时间序列的分析(Rhodes等人,1997 Plasma Phys. and Control. Fusion 40(1998)493-510)和喷气成像(Cziegler,I.等人2010 Phys. of Plasmas 17,No.5(2010)056120)系统的实验表明,湍流边缘密度波动是混沌的。该结论的支持证据包括:指数功率谱的观察(其与时间序列中的洛伦兹形脉冲相关联)、相应的Bandt-Pompe概率分布的总体(Bandt和Pompe 2002 Phys. Rev. Lett. 88 174102)和信号在复杂性-熵平面(C-H平面)上的位置(Rosso等人2007 Phys. Rev. Lett. 99,154102(2007))。边缘湍流作为混沌的分类打开了大门,进一步的工作,以了解底层的过程和湍流传输的影响。

英文摘要:

Analysis of the time series obtained with the O-Mode reflectometer (Rhodes et al 1997 Plasma Phys. and Control. Fusion 40 (1998) 493-510) and the gas puff imaging (Cziegler, I. et al 2010 Phys. of Plasmas 17, No. 5 (2010) 056120) systems on the Alcator C-Mod tokamak reveals that the turbulent edge density fluctuations are chaotic. Supporting evidence for this conclusion includes: the observation of exponential power spectra (which is associated with Lorentzian-shaped pulses in the time series), the population of the corresponding Bandt-Pompe probability distributions (Bandt and Pompe 2002 Phys. Rev. Lett. 88 174102), and the location of the signal on the complexity-entropy plane (C-H plane) (Rosso et al 2007 Phys. Rev. Lett. 99, 154102 (2007)). The classification of edge turbulence as chaotic opens the door for further work to understand the underlying process and the impact on turbulent transport.

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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