TY - JOUR
T1 - Rayleigh scattering measurement of neutral atom number density downstream of a hall thruster under cold flow conditions
AU - Iwamoto, Masataka
AU - Yamamoto, Naoji
AU - Morita, Taichi
AU - Nakashima, Hideki
AU - Tomita, Kentaro
AU - Uchino, Kiichiro
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers JP26289324 and JP16K14506, and the International Center for Space Weather Science and Education at Kyushu University.
PY - 2017
Y1 - 2017
N2 - The approach presented in a study uses the laser Rayleigh scattering technique. This is a non-intrusive method, and it does not disturb the plasma and neutral flow. Number densities can be measured quantitatively by calibration using 104 Pa nitrogen, so a complicated collisional-radiative model is not required. The Rayleigh scattering spectrum reflects the velocity distribution of the atoms, so propellant xenon atoms can be distinguished from the ambient xenon atoms. In addition, even when both ions and electrons are present, the neutral number density can be estimated, since the scattering spectrum is a convolution of Rayleigh and Thomson spectra.
AB - The approach presented in a study uses the laser Rayleigh scattering technique. This is a non-intrusive method, and it does not disturb the plasma and neutral flow. Number densities can be measured quantitatively by calibration using 104 Pa nitrogen, so a complicated collisional-radiative model is not required. The Rayleigh scattering spectrum reflects the velocity distribution of the atoms, so propellant xenon atoms can be distinguished from the ambient xenon atoms. In addition, even when both ions and electrons are present, the neutral number density can be estimated, since the scattering spectrum is a convolution of Rayleigh and Thomson spectra.
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U2 - 10.2322/tjsass.60.327
DO - 10.2322/tjsass.60.327
M3 - Article
AN - SCOPUS:85028946403
SN - 0549-3811
VL - 60
SP - 327
EP - 330
JO - Transactions of the Japan Society for Aeronautical and Space Sciences
JF - Transactions of the Japan Society for Aeronautical and Space Sciences
IS - 5
ER -