Ambipolar Diffusion ·
Non-Ideal MHD
un
seel
.com · ion–neutral drift · flux-freezing breaks · MRI quenched
Am = γ ρ_i / Ω
≫ 1
Ionization x_e
10⁻⁴
Regime
—
Neutral gas (99.99999%)
Ions + electrons (field-tied)
Magnetic field lines
Ion–neutral drift
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seel
.com · Ambipolar Diffusion