Passive optical diagnostic of Xe propelled Hall thrusters. II. Collisional-radiative model
- TSNIIMASH, Pionerskaya 4, Korolev, Moscow 141070 (Russian Federation)
A collisional radiative model is presented for analyzing the xenon-propelled Hall thruster optical radiation based on apparent electron and ion-impact emission cross sections associated with lines in the visible and near-infrared region of the spectrum. The emission cross sections of selected near-infrared emission lines are incorporated in a collisional-radiative model. The effect of stepwise excitation via metastable states on the derived line intensities for emissions from XeI 5p{sup 5}6p(6p{sup '}) levels is evaluated. Meanwhile, visible XeII emissions are shown to provide plasma densities at high electron temperature conditions. The electron temperature and spatial ion number density distribution were determined from the luminescence spectra measured in the discharge and plume near-field plasma of the Hall thruster, the TSNIIMASH D-55 anode layer thruster. The results are in good agreement with the probe measurement data and simulations reported in the literature for the same thruster. The analysis of the Hall thruster XeI near-infrared spectra demonstrates that the neglect of ion-atom collisions results in an erroneous electron temperature determination at electron temperatures below 10 eV.
- OSTI ID:
- 20795826
- Journal Information:
- Journal of Applied Physics, Vol. 99, Issue 11; Other Information: DOI: 10.1063/1.2195019; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANODES
CROSS SECTIONS
ELECTRON TEMPERATURE
EV RANGE 01-10
EXCITATION
HALL EFFECT
INFRARED SPECTRA
ION TEMPERATURE
ION-ATOM COLLISIONS
LUMINESCENCE
MAGNETOHYDRODYNAMICS
METASTABLE STATES
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA GUNS
SIMULATION
THRUSTERS
XENON