Investigation of Magnetic Field Topology in Auto-oscillating Discharge

The magnetic field structure measurements are necessary for understanding of wave propagation in plasma of the auto-oscillating discharge in the open adiabatic trap PR-2. Measurements were made by the developed system for automatic positioning of magnetic probes placed inside the PR-2 vacuum chamber. All magnetic probes were pre-calibrated using Helmholtz coil. Four different circuit configurations were used to excite oscillations in wide frequency range. Observed frequencies of plasma oscillations using magnetic probes correspond to the circuit resonant frequencies.