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Article overview
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Numerical study of the Transverse Diffusion coefficient for a one component model of a plasma | Lorenzo Valvo
; Andrea Carati
; | Date: |
1 May 2016 | Abstract: | We report the results of MD numerical simulations for a one component model
of a plasma in the weakly coupled regime, at different values of temperature
$T$ and applied magnetic field $vec B$, in which the diffusion coefficient
$D_{perp}$ transverse to the field is estimated. We find that there exists a
threshold in temperature, at which an inversion occurs, namely, for $T$ above
the threshold the diffusion coefficient $D_{perp}$ starts decreasing as $T$
increases. This is at variance with the behavior predicted by the Bohm law
$D_{perp}sim T/B$, which actually holds below the threshold. In addition we
find that, for temperatures above such a threshold, another transition occurs,
now with respect to the values of the magnetic field: for weak magnetic fields
the diffusion coefficients scales as $1/B^2$, in agreement with the predictions
of the standard kinetics theory, while it apparently saturates when the field
strength is sufficiently increased. | Source: | arXiv, 1605.0235 | Other source: | [GID 2235125] 2210.11125 | Services: | Forum | Review | PDF | Favorites |
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