Ion-Acoustic Waves ·
Sound in a Plasma
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.com · heavy ions · Boltzmann electrons · c_s = √(k_B T_e/m_i)
Phase speed
— km/s
T_e / T_i
—
phase
—
Heavy ions (inertia)
Hot electrons (the spring)
Ambipolar E-field
Landau damping (T_e≈T_i)
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.com · Ion-Acoustic Waves: Sound in a Plasma Where Electrons Set the Spring