ROTATIONAL MOVEMENT OF PLASMA-DUST STRUCTURES UNDER EXPOSURE TO THE EXTERNAL MAGNETIC FIELD

Abstract

This article presents experimental results on the effect of an external magnetic field on the dust structure, which was suspended in strata of a dc glow discharge.Observations were carried out in strata of a glow discharge located  between two coils, under the coil, and above the coil.We observed an interesting dynamic behavior of dust structures in the strata, which was not previously reported in similar experimental works.During the experiment, it was found that the dust structure suspended in strata of a glow discharge rotates clockwise above the coil (I region) and counterclockwise under the coil (III region), and the dust structure located between the coils (II region) does not rotate on horizontal plane.The magnetic field lines are directed upwards. The dependence of the average angular velocity of dust structures on the induction of the magnetic field in different regions (I-III region) was measured.The longitudinal and transverse components of the magnetic field in the active region under study were also measured using a Hall sensor (Appendix A). An interpretation was made of the behavior of plasma-dust structures in the strata in a dc glow discharge.

Keywords:DC glow discharge, dusty plasma, magnetic field, plasma-dust structure.