BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:A framework for studying CO₂ microwave plasmas DTSTART:20241203T100000Z DTEND:20241203T120000Z DTSTAMP:20260705T231856Z UID:1f5dbc96-e244-4dfe-9154-e0342076e465 SEQUENCE:1 CREATED:20241202T114859Z DESCRIPTION: This thesis presents a comprehensive framework for the study of CO₂ microwave plasmas\, with a specific emphasis on determining gas t emperature. The research aims to develop and refine tools for characterizi ng low-temperature plasmas\, aligning with the step-by-step validation fra mework employed at N-PRIME. The primary objectives of this work include de veloping frameworks focused on gas temperature characterization through mo deling and the analysis of optical emission spectra\, integrating zero-dim ensional (0D) kinetic modeling with fluid descriptions to simulate experim ental data related to gas temperature and CO₂ conversion\, while analyzi ng the rotational spectra of C₂ and N₂⁺ bands by creating dedicated scripts for data extraction and conducting comparisons with existing simul ation tools.The thesis investigates various microwave plasma systems\, inc luding an atmospheric helium axial injection torch (AIT) used for validati ng fluid modeling. It also examines an atmospheric CO₂ coaxial plasma to rch and an atmospheric coaxial N₂ reactor\, both of which are analyzed t hrough optical emission spectroscopy (OES) to determine rotational and vib rational temperatures. Additionally\, the study explores low-pressure micr owave CO₂ discharges in both the active and post-discharge regions to as sess the combined model'\;s capability to accurately represent spatial temperature distribution.This research successfully establishes the propo sed framework\, demonstrating strong agreement with experimental data. The findings confirm the effectiveness of the developed methodologies in accu rately characterizing gas temperatures and enhancing the understanding of microwave plasma behavior. LAST-MODIFIED:20241202T114859Z LOCATION:Online URL:http://df.vps.tecnico.ulisboa.pt/en/events/a-framework-for-studying-co %E2%82%82-microwave-plasmas/ X-ALT-DESC;FMTTYPE=text/html:

This thesis presen ts a comprehensive framework for the study of CO₂ microwave plasmas\, wi th a specific emphasis on determining gas temperature. The research aims t o develop and refine tools for characterizing low-temperature plasmas\, al igning with the step-by-step validation framework employed at N-PRIME.

The primary objectives of this work include developing frameworks f ocused on gas temperature characterization through modeling and the analys is of optical emission spectra\, integrating zero-dimensional (0D) kinetic modeling with fluid descriptions to simulate experimental data related to gas temperature and CO₂ conversion\, while analyzing the rotational spe ctra of C₂ and N₂⁺ bands by creating dedicated scripts for data extr action and conducting comparisons with existing simulation tools.

The thesis investigates various microwave pl asma systems\, including an atmospheric helium axial injection torch (AIT) used for validating fluid modeling. It also examines an atmospheric CO₂ coaxial plasma torch and an atmospheric coaxial N₂ reactor\, both of wh ich are analyzed through optical emission spectroscopy (OES) to determine rotational and vibrational temperatures. Additionally\, the study explores low-pressure microwave CO₂ discharges in both the active and post-disch arge regions to assess the combined model'\;s capability to accurately represent spatial temperature distribution.

This research successfully establishes the proposed framework\, demonstrating strong agreement with experimental data. The findings confir m the effectiveness of the developed methodologies in accurately character izing gas temperatures and enhancing the understanding of microwave plasma behavior.

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