Study of the correlation between the plasma sheath dynamical behavior and the best focus action

Abstract EN

This paper deals with investigations of the plasma current sheath (PCS) axial phase dynamics which is actually based on measurements of its axial velocity.

The plasma focus parameters which include the energy dissipation, plasma inductance, load impedance, minimum radius of plasma focus column and the pinch ratio are detected.

Also, the soft x-ray emission during the plasma focus formation is measured.

All measurements mentioned above are performed at Argon gas pressures ranging from 0.5 to 2 Torr and charging voltage in the range from 8 kV to 12 kV.

The diagnostic tools employed for the experimental work included a Rogowsky coil, resistive po tential divider, magnetic probes and pin-diode.

The experimental results illustrated that the best focus action is detected at the discharge conditions of the optimum dynamical behavior of PCS along the coaxial electrodes.