40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2004
DOI: 10.2514/6.2004-3946
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Optical Diagnostics Options for Bismuth Hall Thrusters

Abstract: A bismuth-fed Hall thruster has recently been selected for further development as a potential solution for faster missions to the outer planets. With higher efficiency and higher power handling, this two-stage Thruster with Anode Layer (TAL) should meet the necessary requirements for such missions. As the thruster is developed, there will be a need for nonintrusive diagnostic methods to optimize the geometry and operating conditions. Such optical diagnostic methods for analyzing the velocity, energy, and numbe… Show more

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Cited by 4 publications
(9 citation statements)
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“…A combination of laser-induced fluorescence (LIF) and absorption spectroscopy will be used to perform a portion of the necessary diagnostics. This paper will summarize the previously-presented 12 analysis of the bismuth spectrum, and revise the previously discussed line selections. It is expected that LIF will be used to probe excited states in the BiI and BiII atomic and ionic particle stream to deduce the three-dimensional (3D) velocity (energy) distribution.…”
Section: Introductionmentioning
confidence: 93%
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“…A combination of laser-induced fluorescence (LIF) and absorption spectroscopy will be used to perform a portion of the necessary diagnostics. This paper will summarize the previously-presented 12 analysis of the bismuth spectrum, and revise the previously discussed line selections. It is expected that LIF will be used to probe excited states in the BiI and BiII atomic and ionic particle stream to deduce the three-dimensional (3D) velocity (energy) distribution.…”
Section: Introductionmentioning
confidence: 93%
“…In the previous paper, 40 th Joint Propulsion Conference paper AIAA-2004-3946 12 , several candidate Bi transitions were selected for analysis. The transition selected for ground state BiI number density determination by atomic resonance absorption spectroscopy was the line at vacuum wavelength 306.86nm (6p 3 4 S 3/2 -7s 4 P 1/2 ).…”
Section: Summary Of Previous Workmentioning
confidence: 99%
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“…In order to measure these quantities via non-intrusive optical diagnostics, it is necessary first to select electronic transitions for measurement, and to analyze the structure of each transition so that data can be properly interpreted. The general spectroscopy necessary to begin this analysis for bismuth has been discussed in previous conference proceedings, 5,6,7 and will not be repeated here.…”
Section: Optical Diagnosticsmentioning
confidence: 99%
“…Previously, 5,6,7 several candidate Bi transitions were selected for analysis and discussed. The transition selected for ground state Bi I number density determination by atomic resonance absorption spectroscopy was the line at vacuum wavelength 306.86nm (6p The selection of the 680.9 nm transition provides several advantages.…”
Section: A Candidate Transitionsmentioning
confidence: 99%