Marquidia Pacheco-Pacheco

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This paper proposes a new system to ignite and to sustain a plasma discharge for different reactor configurations, using a single-series parallel high-frequency resonant converter. The different operation modes are analyzed, and their performance is verified in two applications: an equilibrium plasma discharge (electric arc) and a nonequilibrium plasma(More)
An environmental application of a high-frequency pulsed gliding arc (HFPGA) is presented in this paper. It consists of the degradation of an acid gas mixture (CO<sub>2</sub> and H<sub>2</sub>S) considered as a residue during its sweetening process and contained in sour gas. Plasma interaction with acid gas, leads to a molecular dissociation, mainly forming(More)
In this paper, a detailed diagnostic of an AC glow-to-arc discharge transition is presented. The behavior of the temporal evolution of voltage and current discharges is studied under an atmosphere of helium-methane. In order to determine the rotational temperature, an optical emission-spectroscopy analysis from glow-to-arc regime discharge is carried out,(More)
This paper presents an ac bipolar pulsed power supply, which is used to drive a magnetron sputtering reactor operating under reactive atmosphere. The power supply was tested for the deposition of thin films of ZnO:Al on glass and plastic substrates. Voltage, current, and optical spectroscopy measurements were performed during the discharge. The electrical(More)
A three-phase centrifuged gliding-arc (TPCGA) discharge was developed for a large volume of plasma effect, combining rotational and axial displacements through a three-phase power source and the injected gas, respectively. The principle of operation and the experimental setup are described. This TPCGA discharge is applied to the treatment of toxic gases as(More)
A new magnetically assisted transferred plasma torch (MA-TPT) was specially developed for the treatment of ceramic clay and harmful substances. The electrical plasma source consists mainly of a power buck converter and an alternating magnetic field, which allow sustaining a highly efficient plasma discharge at different arc lengths. The interaction of the(More)
A reactive magnetron sputtering reactor powered by an ac bipolar pulse power source was used to grow aluminum-doped zinc oxide (ZnO:Al or AZO) on polypropylene films. The ac bipolar pulses and the electrode configuration assure a stable and arc-free material deposition at room temperature. The films were obtained in a reactive atmosphere of argon and oxygen(More)
This paper describes: 1) the implementation of one system for controlling and monitoring physical variables involved in starting and sustaining a three-phase centrifuged gliding-arc (TPCGA) discharge called gliding centrifugal thermal plasma (GCTP), and 2) the analysis of data collected in spreadsheets by a virtual instrument (VI) to explain plasma(More)
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