TY - GEN
T1 - Plasma property measurement in a miniature microwave discharge ion thruster by laser Thomson scattering
AU - Yamamoto, Naoji
AU - Kondo, Shmya
AU - Tsuru, Teppei
AU - Nakashima, Hideki
AU - Majima, Amane
AU - Yamasaki, Naoto
AU - Tomita, Kentaro
AU - Uchino, Knchiro
PY - 2008
Y1 - 2008
N2 - 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.
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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U2 - 10.2514/6.2008-4641
DO - 10.2514/6.2008-4641
M3 - Conference contribution
AN - SCOPUS:77957830064
SN - 9781563479434
T3 - 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
BT - 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
PB - American Institute of Aeronautics and Astronautics Inc.
ER -