SP-345 Evolution of the Solar
System
FIGURE 15.3.1.- Electrostatic double
layers or sheaths are often produced in a plasma. The figure show an
electrostatic discontinuity produced spontaneously. The only function
of the magnetic field is to keep the discharge away from the walls in
order to ensure that the observed phenomena are not due to wall
effects. Over the double layer a voltage drop is produced which
sometimes suddenly became large (~105 V) and may disrupt
the discharge.
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