Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering

Naoji Yamamoto, Shmya Kondo, Teppei Tsuru, Hideki Nakashima, Amane Majima, Naoto Yamasaki, Kentaro Tomita, Knchiro Uchino

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

Abstract

For understanding the mechanism of plasma production and loss in a miniature microwave discharge ion thruster, plasma parameters, electron number density and electron energy distribution function, in a miniature microwave discharge ion thruster were successfully measured by means of laser Thomson scattering. A photon counting method and a double monochromator were used against small Thomson scattering signal and strong stray laser light. The result shows an electron energy distribution function is Maxwellian, since the scattered spectrum can be fitted by Gaussian at the temperature of 1.5 eV. An electron number density is 2.3 × 1018 m-3 The measured electron number density and electron temperature values were found to be reasonable compared with estimation deduced form extracted ion beam current.

Original languageEnglish
Title of host publication44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781563479434
DOIs
Publication statusPublished - 2008

Publication series

Name44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Control and Systems Engineering
  • Space and Planetary Science
  • Energy(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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