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Part 1: Document Description
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Citation |
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Title: |
Chaotic edge density fluctuations in the Alcator C-Mod tokamak |
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Identification Number: |
doi:10.7910/DVN/HCNVAV |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2018-10-05 |
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Version: |
1 |
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Bibliographic Citation: |
Z. Zhu, A. E. White, T. A. Carter, S. G. Baek, J. L. Terry, 2018, "Chaotic edge density fluctuations in the Alcator C-Mod tokamak", https://doi.org/10.7910/DVN/HCNVAV, Harvard Dataverse, V1 |
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Citation |
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Title: |
Chaotic edge density fluctuations in the Alcator C-Mod tokamak |
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Identification Number: |
doi:10.7910/DVN/HCNVAV |
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Authoring Entity: |
Z. Zhu, A. E. White, T. A. Carter, S. G. Baek, J. L. Terry |
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Distributor: |
Harvard Dataverse |
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Holdings Information: |
https://doi.org/10.7910/DVN/HCNVAV |
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Study Scope |
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Keywords: |
Physics, plasma fluctuations, reflectometers, stochastic processes, time series analysis, turbulent flows |
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Abstract: |
Analysis of the time series obtained with the O-Mode reflectometer [Rhodes et al., 1997 Plasma Phys. Controlled Fusion 40, 493–510 (1998)] and the gas puff imaging [Cziegler et al., Phys. Plasmas 17(5), 056120 (2010)] 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, Phys. Rev. Lett. 88, 174102 (2002)], and the location of the signal on the complexity-entropy plane (C-H plane) [Rosso et al., 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. |
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Notes: |
<a href="http://library.psfc.mit.edu/catalog/reports/2010/17ja/17ja020/abstract.php">PSFC REPORT PSFC/JA-17-20</a><br /><br />This work was supported by the U.S. Department of Energy Office of Science under Agreement Nos. DE-FC02-99ER54512 and DE-FC02-07ER54918-011. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Notes: |
This dataset is made available without information on how it can be used. You should communicate with the Contact(s) specified before use. |
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