INVESTIGATION OF THE PROPERTIES OF MICROPARTICLES IN THE GLOW DISCHARGE STRATUM IN A CROSSED ELECTRIC AND MAGNETIC FIELD

In this work, the behavior of charged micron-sized particles in DC glow discharge stratum at low pressure a crossed magnetic and electric field was experimentally studied. The experiment conducted vertically oriented gas-discharge glass tube. A homogeneous created using two-section Helmholtz coil. results showed that dust move opposite direction to ExB drift as induction increases. Once reaches specific threshold (B>10 mT), start rotating forming counter-rotating vortex pairs on horizontal plane. Moreover, it observed shape structures changes from disk an ellipsoid. PIV (particle image velocimetry) method employed analyze vortices' dynamic behavior, generation co-vortex rotation explained through particles' charge gradient, which orthogonal ion drag force.