skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Chaotic edge density fluctuations in the Alcator C-Mod tokamak

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4978784· OSTI ID:1465735

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.

Research Organization:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FC02-99ER54512; FC02-07ER54918-011
OSTI ID:
1465735
Alternate ID(s):
OSTI ID: 1361790
Journal Information:
Physics of Plasmas, Vol. 24, Issue 4; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (54)

Tendency towards maximum complexity in a nonequilibrium isolated system journal May 2001
Two-parameter study of the routes to chaos journal May 1983
Reconstruction of current profile parameters and plasma shapes in tokamaks journal November 1985
Blob Structure and Motion in the Edge and SOL of NSTX dataset January 2016
Electron collisions in the trapped gyro-Landau fluid transport model journal December 2010
Burst statistics in Alcator C-Mod SOL turbulence journal July 2013
Intermittent fluctuations in the Alcator C-Mod scrape-off layer journal May 2013
I-mode: an H-mode energy confinement regime with L-mode particle transport in Alcator C-Mod journal August 2010
Non-diffusive transport in plasma turbulence: a fractional diffusion approach text January 2004
Chaotic density fluctuations in L-mode plasmas of the DIII-D tokamak journal March 2015
Power laws, Pareto distributions and Zipf's law text January 2004
Fluctuating zonal flows in the I-mode regime in Alcator C-Mod journal May 2013
High-resolution edge Thomson scattering measurements on the Alcator C-Mod tokamak journal January 2001
Distinguishing Noise from Chaos journal October 2007
Fractional diffusion in plasma turbulence journal August 2004
Blob Structure and Motion in the Edge and SOL of NSTX dataset January 2016
Scrape-off layer turbulence in TCV: evidence in support of stochastic modelling journal January 2016
Intermittent turbulence and turbulent structures in a linear magnetized plasma journal January 2006
Gas puff imaging of edge turbulence (invited) journal March 2003
Power law spectra and intermittent fluctuations due to uncorrelated Lorentzian pulses journal February 2017
Blob structure and motion in the edge and SOL of NSTX journal January 2016
Permutation entropy analysis of temperature fluctuations from a basic electron heat transport experiment journal June 2013
Deterministic dynamics of neural activity during absence seizures in rats journal April 2009
A simple stochastic model for the onset of turbulence in Rayleigh-Bénard convection journal September 1982
Tendency to Maximum Complexity in a Non-Equilibrium Isolated System text January 2002
Experimental studies of edge turbulence and confinement in Alcator C-Mod journal May 2010
Forbidden patterns in financial time series text January 2007
Generalized statistical complexity measures: Geometrical and analytical properties journal September 2006
SOL width and intermittent fluctuations in KSTAR journal August 2017
Resonant drive and nonlinear suppression of gradient-driven instabilities via interaction with shear Alfvén waves journal May 2011
Signal amplitude effects on reflectometer studies of density turbulence in tokamaks journal April 1998
Forbidden patterns in financial time series journal March 2008
Permutation Entropy: A Natural Complexity Measure for Time Series journal April 2002
Origin of Lorentzian pulses in deterministic chaos journal July 2012
Causality and the entropy–complexity plane: Robustness and missing ordinal patterns journal January 2012
Gyrokinetic simulations of turbulent transport journal March 2010
Overview of the Alcator C-Mod Research Program journal September 2009
Permutation entropy and statistical complexity analysis of turbulence in laboratory plasmas and the solar wind journal February 2015
Forbidden patterns, permutation entropy and stock market inefficiency journal July 2009
Power law spectra and intermittent fluctuations due to uncorrelated Lorentzian pulses text January 2016
Fluctuation statistics in the scrape-off layer of Alcator C-Mod journal March 2016
Generality of Deterministic Chaos, Exponential Spectra, and Lorentzian Pulses in Magnetically Confined Plasmas journal October 2011
Exponential Frequency Spectrum in Magnetized Plasmas journal August 2008
Power laws, Pareto distributions and Zipf's law journal September 2005
A review of theories of the L-H transition journal December 1999
Burst statistics in Alcator C-Mod SOL turbulence text January 2012
Observations of the turbulence in the scrape-off-layer of Alcator C-Mod and comparisons with simulation journal May 2003
Intermittent turbulence and turbulent structures in a linear magnetized plasma text January 2005
Mirror Langmuir probe: A technique for real-time measurement of magnetized plasma conditions using a single Langmuir electrode journal July 2007
Intermittency in nonlinear dynamics and singularities at complex times journal May 1981
Fractional Brownian Motions, Fractional Noises and Applications journal October 1968
Revisiting Lévy flight search patterns of wandering albatrosses, bumblebees and deer journal October 2007
Observation of exponential spectra and Lorentzian pulses in the TJ-K stellarator journal August 2011
Implementation and application of two synthetic diagnostics for validating simulations of core tokamak turbulence journal May 2009

Cited By (3)

Intermittent fluctuations due to uncorrelated Lorentzian pulses journal January 2018
Skewed Lorentzian pulses and exponential frequency power spectra text January 2018
Skewed Lorentzian pulses and exponential frequency power spectra journal January 2018

Similar Records

Chaotic edge density fluctuations in the Alcator C-Mod tokamak
Dataset · Fri Oct 05 00:00:00 EDT 2018 · OSTI ID:1465735

Fluctuating zonal flows in the I-mode regime in Alcator C-Mod
Journal Article · Wed May 15 00:00:00 EDT 2013 · Physics of Plasmas · OSTI ID:1465735

Anomalous transport in the H-mode pedestal of Alcator C-Mod discharges
Dataset · Fri Jun 04 00:00:00 EDT 2021 · OSTI ID:1465735