Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session CP11: Poster Session II: Basic Plasma Physics; Boundary, PMI, Proto-MPEX; International Tokamaks; Turbulence and Transport; Other Configurations; Z-pinch, Dense Plasma Focus and MagLIF (2:00pm-5:00pm)
Monday, November 5, 2018
OCC Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.CP11.12
Abstract: CP11.00012 : Density-magnetic field correlation studies for characterizing the turbulence content in the SSX plasma*
M. R. Brown
David A Schaffner
(Bryn Mawr College)
Turbulence is of great interest in magnetized plasmas and can be determined by carrying out a frequency power spectrum in the fluctuations present in the turbulent quantities. However, the power spectrum does not shed light on the underlying physical mechanisms at play. To address this issue, one may consider the turbulent fluctuations as primarily originating from the non-linear interaction of linear MHD modes. This type of analysis has been used in solar wind turbulence observations to determine the proportion of fast and slow wave content in the turbulent plasma1. The different wave modes can be distinguished by determining the correlation between the fluctuations in the density and the co-located magnetic field aligned component. In this poster, we will present the preliminary results obtained by carrying out the correlation analysis on the fluctuations present in the density and the co-located magnetic field. These studies are carried out on the SSX device, where we generate a spheromak which then tilts and relaxes to a twisted structure. The relaxation process is highly turbulent in nature and in this phase, the plasma is used for carrying out these studies.
1Howes et. al., Ap. J. Lett. 753, L19 (2013).
*Work supported by the DOE ARPA-E ALPHA and NSF programs.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.CP11.12
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