Investigating the Optimized Physical and Electrical Operating Condition of DC Pulsed Spark Discharge over Water Surface Generated by Different Input Parameters

This paper deals with the repetitively pulsed spark discharges over the water surface by studying both the electrical and the spectroscopic aspects. Detailed discharge electrical parameters, vibrational and rotational temperatures, and electron density measurements for nine different conditions of input frequencies and voltages over the water surface have been reported. The objective of this paper was to find effective operating conditions and compile results for the future industrial applications. The spectroscopic characterizations such as temperatures and densities were gathered from the optical emission spectroscopy (OES). The N2 (C-B) second positive system (SPS) transition (370-382 nm) and the O triplet line (777 nm) obtained from plasma spectrum were analyzed by SpecAir software in order to get the vibrational/rotational temperatures and electron densities, respectively. The results of this work are concurred with our previous work on softening hard water using pulsed spark discharge, finding the most effective conditions practically.