Electron Heat Transport Measured in a Stochastic Magnetic Field

T. M. Biewer, C. B. Forest, J. K. Anderson, G. Fiksel, B. Hudson, S. C. Prager, J. S. Sarff, J. C. Wright, D. L. Brower, W. X. Ding, S. D. Terry

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Abstract

New profile measurements have allowed the electron thermal diffusivity profile to be estimated from power balance in the Madison Symmetric Torus where magnetic islands overlap and field lines are stochastic. The measurements show that (1) the electron energy transport is conductive not convective, (2) the measured thermal diffusivities are in good agreement with numerical simulations of stochastic transport, and (3) transport is greatly reduced near the reversal surface where magnetic diffusion is small.

Original languageEnglish (US)
JournalPhysical review letters
Volume91
Issue number4
DOIs
StatePublished - Jul 24 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Biewer, T. M., Forest, C. B., Anderson, J. K., Fiksel, G., Hudson, B., Prager, S. C., Sarff, J. S., Wright, J. C., Brower, D. L., Ding, W. X., & Terry, S. D. (2003). Electron Heat Transport Measured in a Stochastic Magnetic Field. Physical review letters, 91(4). https://doi.org/10.1103/PhysRevLett.91.045004