Rotation of a dust structure in strong nonuniform magnetic field

The experimental results on the influence of an external nonuniform magnetic field on the dust structure dynamics in a stratified glow discharge of helium are presented. The rotation of the dust structure at different values of magnetic field induction was investigated, where magnetic field varied up to $0.2$ T. It was found that previously reported effect of the inversion of the rotation direction of a dust structure in an axial uniform magnetic field is strongly hindered by a radial component of the magnetic field induction in the case of a nonuniform magnetic field. This can be explained by the impact of the Lorentz force component appearing due to the axial component of the electric field and radial component of the magnetic field.