Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX

Banerjee, S. ; Diallo, A. ; Zweben, S. J.
Issue date: 2016
Rights:
 Creative Commons Attribution 4.0 International (CC BY)
Cite as:
Banerjee, S., Diallo, A., & Zweben, S. J. (2016). Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1366985
@electronic{banerjee_s_2016,
  author      = {Banerjee, S. and
                Diallo, A. and
                Zweben, S. J.},
  title       = {{Observation of quasi-coherent edge fluct
                uations in Ohmic plasmas on NSTX}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  year        = 2016,
  url         = {https://doi.org/10.11578/1366985}
}
Description:

A quasi-coherent mode with frequency f = 40 kHz is observed in Ohmic plasmas in NSTX with the gas puff imaging diagnostic (GPI). This mode is located predominantly just inside the separatrix, with a maximum fluctuation amplitude similar to that of the broadband turbulence in the same frequency range. The quasi-coherent mode has a poloidal wavelength 16 cm and a poloidal velocity 49 km/s in the electron diamagnetic direction, which are similar to the characteristics expected from a linear drift-wave like mode in the edge.

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2 Bannerjee.h5 58.4 MB
More about this record
Authors Banerjee, S.
Diallo, A. (Princeton Plasma Physics Laboratory)
Zweben, S. J. (Princeton Plasma Physics Laboratory)
Domains Natural Sciences
Communities Princeton Plasma Physics Laboratory
Subcommunities NSTX, Spherical Torus, Tokamak Experimental Sciences
Issue date 2016
URI https://doi.org/10.11578/1366985
URI http://arks.princeton.edu/ark:/88435/dsp0170795b055
Publisher Princeton Plasma Physics Laboratory, Princeton University
Type Dataset
Funders United States Department of Energy, DE-AC02-09CH11466
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