Regular Article

Enhanced energy transfer efficiency in a four-electrodes configuration DBD plasma jet

¹ Center for Semiconducting Components and Nanotechnologies – State University of Campinas, Campinas, Brazil
² Institute of Physics “Gleb Wataghin” – State University of Campinas, Campinas, Brazil
³ Faculty of Engineering – Sao Paulo State University, Guaratinguetá, Sao Paulo, Brazil

^a e-mail: fellype@gmail.com

Received: 26 May 2017
Received in final form: 8 August 2017
Published online: 7 November 2017

Abstract

In this work a dielectric barrier discharge (DBD) plasma jet that uses a multiple electrodes configuration is investigated. The results show that both plasma power and its rotational and vibrational temperatures tend to increase with the number of powered electrodes in the DBD device. The emission intensities of the excited species in the plasma, and consequently their number density, also grow as a function of the number of powered electrodes. Based on these facts and since the electric power provided by the power supply was kept constant, there is an indication that the use of multiple electrodes improves the energy efficiency of the device.