For the plasma flow generated in a discharge in the crossed magnetic and electric fields, the dynamics of the plasma density are studied by means of triple-mirror laser interferometry and a technique basec on the floating probe measurement of the Hall potential induced by the probing current. The obtained plasma-density profiles (directed across the flow) are presented. It is shown that, under certain conditions, the jump in the plasma density (which, in the absence of a drift channel, is related to the decrease in the plasma drift velocity outside the discharge region) arises at the leading edge of the flow. The formation of a drift channel, which is caused by the polarization currents and the formation of plasma sheaths at the flow boundaries, is considered. It is shown that magnetosonic waves can be generated in the plasma region through which the polarization current flows.
|Number of pages||5|
|Journal||Plasma Physics Reports|
|Publication status||Published - Mar 1997|
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics