Four-electrodes DBD plasma jet device with additional floating electrode
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Data
2020-01-24
Autores
Nascimento, Fellype do
Machida, Munemasa
Kostov, Konstantin G. [UNESP]
Moshkalev, Stanislav
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
A Dielectric Barrier Discharge (DBD) plasma jet in a four electrodes configuration was investigated in order to improve the discharge parameters, such as discharge power and rotational and vibrational temperatures of molecular species in the plasma plume. The improvement attempts were made by introducing an auxiliary floating electrode in a form of a metallic pin inside the DBD device. That piece was placed near the bottom of the main device, centered in relation to the four powered electrodes, which were covered with a dielectric material. By using metallic pins with different lengths, it was observed that there were considerable variations of the plasma parameters as a function of the pin length. Two carrier gases were tested: argon and helium. With helium as the working gas, it was found that there is an optimal pin length that maximizes the plasma power and its vibrational temperature. In addition, it was verified that for the pin of optimum length the relative intensity of light emissions from OH and NO species achieved higher values than in other conditions studied.
Descrição
Palavras-chave
Plasma Physics
Como citar
European Physical Journal D. New York: Springer, v. 74, n. 1, 7 p., 2020.