Schematics of the dc glow discharge system with magnetic field coils, PIII electrode, and Faraday cups (not to scale).
Density profiles measured with a double probe of plasmas with (a) , and and (b) , , and , . Radial distances are measured from the surface of one of the electrode’s faces ( is radially from the vessel axis).
Temporal evolution of the transversal (Trans) and longitudinal (Long) Faraday cup currents, the high voltage at the target sample (HV), and the current measured by a Rogowskii coil (Rog) for unmagnetized plasmas.
Temporal evolution of the longitudinal and transversal Faraday cup currents (units in ) for plasmas with , , and . The high voltage applied to the electrode was about in all cases.
Amplitude of negative current spikes (from average baseline during high voltage pause to negative peak value during pulses) in the transversal Faraday cup for high voltages from as a function of magnetic field.
Amplitude of negative current spikes (from average baseline during high voltage pause to negative peak value during pulses) in the longitudinal Faraday cup as a function of magnetic field for high voltages from .
Amplitude of negative current spikes in the transversal (open symbols) and longitudinal (solid symbols) Faraday cups as a function of magnetic field for high voltages of and .
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