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

doi:10.2514/6.2008-4641

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 proceeding › Conference 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 language	English
Title of host publication	44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)	9781563479434
DOIs	https://doi.org/10.2514/6.2008-4641
Publication status	Published - 2008

Publication series

Name	44th 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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Yamamoto, N., Kondo, S., Tsuru, T., Nakashima, H., Majima, A., Yamasaki, N., Tomita, K., & Uchino, K. (2008). Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering. In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit [2008-4641] (44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2008-4641

Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering. / Yamamoto, Naoji; Kondo, Shmya; Tsuru, Teppei; Nakashima, Hideki; Majima, Amane; Yamasaki, Naoto; Tomita, Kentaro; Uchino, Knchiro.

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc., 2008. 2008-4641 (44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yamamoto, N, Kondo, S, Tsuru, T, Nakashima, H, Majima, A, Yamasaki, N, Tomita, K & Uchino, K 2008, Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering. in 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit., 2008-4641, 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics Inc. https://doi.org/10.2514/6.2008-4641

Yamamoto N, Kondo S, Tsuru T, Nakashima H, Majima A, Yamasaki N et al. Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering. In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc. 2008. 2008-4641. (44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit). https://doi.org/10.2514/6.2008-4641

Yamamoto, Naoji ; Kondo, Shmya ; Tsuru, Teppei ; Nakashima, Hideki ; Majima, Amane ; Yamasaki, Naoto ; Tomita, Kentaro ; Uchino, Knchiro. / Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering. 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc., 2008. (44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit).

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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.",

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AU - Yamasaki, Naoto

AU - Tomita, Kentaro

AU - Uchino, Knchiro

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AB - 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.

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