Electro-diffusion in a plasma with two ion species
نویسندگان
چکیده
منابع مشابه
Ion dynamics in a two-ion-species plasma
The ion dynamics in a two-ion-species plasma pushed by a magnetic field pressure is examined. It is shown that the behavior of such a plasma may significantly differ from the behavior of a single-ion-species plasma, in which the current is carried by the electrons and the ions move in the direction of the magnetic field force. Cases are demonstrated in which the current is carried by the ions, ...
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The excitation of electrostatic ion-cyclotron (EIC) waves is studied in a single-ended Q machine in a two-ion-component plasma (Cs+ and K+). Over a large range of relative concentrations of Cs+ and K+ ions, two modes are excited with frequencies w , z Q,,, and w2 t QK+, where the Q's are the respective cyclotron frequencies. The results are discussed in terms of a fluid theory of electrostatic ...
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For a weakly collisional two-ion species plasma, it is shown that the minimum phase velocity of ion acoustic waves (IAWs) at the sheath-presheath boundary is equal to twice the phase velocity in the bulk plasma. This condition provides a theoretical basis for the experimental results that each ion species leaves the plasma with a drift velocity equal to the IAW phase velocity in the bulk plasma...
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The Bohm criterion is studied experimentally in the case of a two ion species plasma. Measurements are carried out in Ar and Ar+He plasmas (PA(r I) approximately 0.1 mtorr, 0< or =P(He)/P(Ar)< or =25, and 0< or =n(+)(He)/n(e)< or =0.5, T(e)< or =2 eV) created in an unmagnetized dc hot filament discharge confined by surface multidipole magnetic fields. Laser-induced fluorescence (LIF) measuremen...
متن کاملMagnetic field propagation in a two ion species planar plasma opening switch
Three fluid plasma evolution equations are applied to the problem of magnetic field propagation in a planar plasma opening switch. For certain initial conditions in which Hall parameter H 1, magnetic field penetration due to the Hall field, initially, as expected, either opposes or adds to the hydromagnetic pushing, depending on the polarity of the magnetic field relative to the density gradien...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2012
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.4745869