TY - GEN
T1 - Carbon Transport in Electric Propulsion Testing – I
T2 - AIAA SciTech Forum and Exposition, 2024
AU - Tran, H.
AU - Clark, S.
AU - Thompson, R.
AU - Levin, D. A.
AU - Rovey, J.
AU - Chew, H. B.
N1 - Publisher Copyright:
© 2024 by Professor Huck Beng Chew.
PY - 2024
Y1 - 2024
N2 - A quantitative assessment of carbon transport during ground-based testing of high-power electric propulsion (EP) thrusters is essential for accurate lifetime assessment. Novel experimental carbon tracking techniques based on isotopic labeling of 13C, in concert with Direct Simulation Monte Carlo (DSMC) plasma simulation techniques, have added the capability to elucidate the effects of carbon contamination on critical EP surfaces. Here, a multiscale sputtering simulation framework is used to inform and validate these carbon transport experimental-simulation models. Specifically, molecular dynamics (MD) simulations, upscaled to Monte Carlo (MC) simulations are adopted to quantify the relevant macroscopic sputtering properties (sputter yield, angle, and energy) of carbon under krypton ion bombardment at 300 eV. The multiscale sputtering simulation is able to capture the smoothening behavior observed from post-sputtered surface analysis of a 13C pellet from a hall thruster.
AB - A quantitative assessment of carbon transport during ground-based testing of high-power electric propulsion (EP) thrusters is essential for accurate lifetime assessment. Novel experimental carbon tracking techniques based on isotopic labeling of 13C, in concert with Direct Simulation Monte Carlo (DSMC) plasma simulation techniques, have added the capability to elucidate the effects of carbon contamination on critical EP surfaces. Here, a multiscale sputtering simulation framework is used to inform and validate these carbon transport experimental-simulation models. Specifically, molecular dynamics (MD) simulations, upscaled to Monte Carlo (MC) simulations are adopted to quantify the relevant macroscopic sputtering properties (sputter yield, angle, and energy) of carbon under krypton ion bombardment at 300 eV. The multiscale sputtering simulation is able to capture the smoothening behavior observed from post-sputtered surface analysis of a 13C pellet from a hall thruster.
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U2 - 10.2514/6.2024-1135
DO - 10.2514/6.2024-1135
M3 - Conference contribution
AN - SCOPUS:85193830929
SN - 9781624107115
T3 - AIAA SciTech Forum and Exposition, 2024
BT - AIAA SciTech Forum and Exposition, 2024
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
Y2 - 8 January 2024 through 12 January 2024
ER -