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- W1964471465 abstract "Theoretical and numerical studies of anomalous transport due to the lower-hybrid-drift instability show that this mode can cause significant diffusion in post-implosion theta pinches where Ti ≫ Te and the electron drift velocity is below the ion thermal speed. Numerical results show that the diffusion scales with the simple diffusion velocity VD ∼ (c2νan/ω2pe) [∂ℓnBz/∂x] = − (c2νanβ/2ωpe2) [∂ℓnn/∂x], where νan is the anomalous collision frequency for the lower-hybrid-drift instability, estimated from quasilinear theory. (Here, Bz is the magnetic field, n is the density, and β = 8πnTi/Bz2 is the local value of beta.) Moreover, the time evolution of the sheath width in the numerical calculation agrees well with the simple theoretical estimate [Ln(t)/Ln(t=0)]4 = 1 + 4[VD(t=0)/Ln(t = 0)]t, where Ln(t) is the density sheath width [Ln ≅ −(∂ℓnn/∂x)−1]. This simple formula for lower-hybrid-drift sheath broadening is valid for 0.5 rLi < Ln < 0.5 (mi/me)1/2rLi, where rLi is the ion Larmor radius." @default.
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- W1964471465 date "1977-02-01" @default.
- W1964471465 modified "2023-10-14" @default.
- W1964471465 title "Sheath broadening by the lower-hybrid-drift instability in post-implosion theta pinches" @default.
- W1964471465 cites W1977738303 @default.
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- W1964471465 doi "https://doi.org/10.1088/0029-5515/17/1/008" @default.
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