Plasma Structure and Non-Equilibrium Thermodynamics of Atmospheric Millimeter-Wave Discharge in Microwave Rocket

Kuniyoshi Tabata, Ayuto Manabe, Yoshiki Takase, Kimiya Komurasaki, Rei Kawashima, Hokuto Sekine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Plasma structures, as well as vibrational and rotational temperatures of millimeter-wave discharge plasma were investigated experimentally using a 28 GHz gyrotron beam. Four plasma structures were observed in the range of 10–100 kPa and 0.01–1.0 GW/m2 . Besides, the vibrational temperature didn’t exceed 6000 K at beam intensities of 0.067–0.46 GW/m2 and atmospheric pressure, and non-equilibrium between vibrational and translational–rotational temperatures was confirmed. Furthermore, a two-dimensional and two-temperature CFD simulation was carried out which took into account the non-equilibrium temperatures and plasma structures. The computational results suggested that an ionization-wave front can exceed a shock wave front on the order of one millimeter due to the energy relaxation delay from vibrational to translational temperature.

Original languageEnglish
Title of host publicationAIAA AVIATION 2022 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624106354
DOIs
Publication statusPublished - 2022
EventAIAA AVIATION 2022 Forum - Chicago, United States
Duration: 2022 Jun 272022 Jul 1

Publication series

NameAIAA AVIATION 2022 Forum

Conference

ConferenceAIAA AVIATION 2022 Forum
Country/TerritoryUnited States
CityChicago
Period22/6/2722/7/1

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Aerospace Engineering

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