TY - GEN
T1 - Radar rempi measurements in the presence of a magnetic field
AU - Galea, Christopher A.
AU - Shneider, Mikhail N.
AU - Dogariu, Arthur
AU - Miles, Richard B.
N1 - Publisher Copyright:
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Radar resonance-enhanced multi-photon ionization (Radar REMPI) has developed as a diagnostic technique over the past decade, though the effects of an external magnetic field have yet to be considered. A model for Radar REMPI in the presence of a magnetic field is developed and tested in experiment, resulting in a depolarization of the microwave scattering. The effect is found to depend on both the magnitude and direction of the magnetic field, which can lead to over-or under-estimates of Radar REMPI measurements if not taken into account, but also shows the potential for the diagnostic to measure vector magnetic fields. The determined dependence of the Radar REMPI signal on the external magnetic field can be used to improve the measurements of electron and neutral number densities, electron loss rates, and other measurement capabilities of Radar REMPI. Suggestions are made on how to minimize and account for this effect in experiments for other desired measurement quantities.
AB - Radar resonance-enhanced multi-photon ionization (Radar REMPI) has developed as a diagnostic technique over the past decade, though the effects of an external magnetic field have yet to be considered. A model for Radar REMPI in the presence of a magnetic field is developed and tested in experiment, resulting in a depolarization of the microwave scattering. The effect is found to depend on both the magnitude and direction of the magnetic field, which can lead to over-or under-estimates of Radar REMPI measurements if not taken into account, but also shows the potential for the diagnostic to measure vector magnetic fields. The determined dependence of the Radar REMPI signal on the external magnetic field can be used to improve the measurements of electron and neutral number densities, electron loss rates, and other measurement capabilities of Radar REMPI. Suggestions are made on how to minimize and account for this effect in experiments for other desired measurement quantities.
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U2 - 10.2514/6.2019-0195
DO - 10.2514/6.2019-0195
M3 - Conference contribution
AN - SCOPUS:85083943885
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -