DEFINITION OF THE DENSITY OF ENERGY OF A PULSED PLASMA FLOW USING A WIRE CALORIMETER

Abstract

In this work, the results of an experimental study of energy properties of pulsed plasma are presented. The experiments were performed on pulsed plasma accelerator PPA-30. The plasma currents were measured by Rogowski's belt, the results of this measurement are also presented in this paper. Using a wire calorimeter, installed at a distance of 25 cm from the electrode system, oscillograms of the voltage drop on the shunt resistance were obtained during interaction with the plasma flow. Based on the obtained oscillograms, the energy densities of the plasma flux were calculated as a function of the discharge voltage. The curve of the dependence of the energy density of the plasma flow on the discharge voltage showed that the value of the discharge voltage determines the value of the kinetic energy. If it is gradually increased, the mobility of the charged particles will increase, their kinetic energy will increase. During work it was also observed that the wire calorimeter can operate as an electrical probe. This is evidenced by the voltage deviation in the chain, which are clearly visible on some oscillograms. The obtained results of the investigation of the energy characteristics of pulsed plasma showed that at a voltage of 13 kV, the maximum energy density is 98 J/cm².

Keywards: pulse plasma accelerator, TOKAMAK, pulsed plasma flow, resistive colorimeter