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Convective motion in collisionless trapped electron mode turbulence
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) History of electron heat conductivity and turbulence amplitude, averaged over . (b) History of mean radial excursion and diffusion for typical barely trapped electron and deeply trapped electron at .

Image of FIG. 2.
FIG. 2.

(a) (Color) Electron diffusion in 2D phase space with 9 grid points and 24 grid points. Bottom panel (b) Electron diffusion vs electron toroidal precessional frequency (red dots), which is fitted by Eq. (4) (solid line). The dashed line is from Eq. (4) by using the theoretical linear eigen frequencies.

Image of FIG. 3.
FIG. 3.

(a) (Color) Outward convection velocity in 2D phase space. (b) Convection velocity vs electron toroidal precessional frequency for and their respective Lorentzian fit by Eq. (4) (solid lines).

Image of FIG. 4.
FIG. 4.

(a) (Color) Electron energy loss rate in 2D phase space. (b) Cross correlation corr() between (a) and Fig. 3(a) for different . (c) Pinch coefficient vs energy at for deeply and barely trapped electrons, respectively. The discrete diamonds are from the simulation and the solid curves are from analytic formula in Eq. (6).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Convective motion in collisionless trapped electron mode turbulence