Journal Publications Doyle, S.J., Xu, K.G., "Use of Thermocouples and Argon Line Broadening for Gas Temperature Measurement in a Radio Frequency Atmospheric Microplasma Jet," Review of Scientific Instruments, 88, 023114, 2017. Dextre, R.A., Xu, K.G., "Effect of the Split-Ring Resonator Width on the Microwave Microplasma Properties," IEEE Transactions on Plasma Science, Vol. 45, NO. 2, 2017. Xu, K.G., Doyle, S.J, "Measurement of Atmospheric Pressure Microplasma Jet with Langmuir Probes," Journal of Vacuum Science and Technology A, 34, 051301, 2016. Jacbos, S.V., Xu, K.G., "Examination of Ionic Wind and Cathode Sheath Effects in a E-field Premixed Flame with Ion Density Measurements," Physics of Plasmas, 23, 043504, 2016. Langendorf, S., Xu, K.G., Walker, M.L.R., "Effects of Wall Electrodes on Hall Effect Thruster Plasma," Physics of Plasmas, 22, 023505, 2015. Xu, K. G., “Plasma Sheath Behavior and Ionic Wind Effect in Electric Field Modified Flames,” Combustion and Flame, 161, 2014. Xu, K. G., Walker, M. L. R., “Effect of External Cathode Azimuthal Position on Hall Effect Thruster Plume and Diagnostics,” Journal of Propulsion and Power, Vol.30, No. 2, 2014. Xu, K. G, Dao, H., Walker, M. L. R., “Potential Contour Shaping and Sheath Behavior with Wall Electrodes and Near-Wall Magnetic Fields in Hall Thrusters,” Physics of Plasmas, Vol. 19, No. 10, 2012. Xu, K. G, Walker, M. L. R., “Plume Characterization of an Ion Focusing Hall Thruster.” Journal of Propulsion and Power, Vol. 28, No. 5, 2012. Xu, K. G, Walker, M. L. R., “Technique to Collimate Ions in a Hall Effect Thruster Discharge Chamber,” Journal of Propulsion and Power, Vol. 27, No. 3, 2011. Xu, K. G, and Walker, M.L.R., “High-Power, Null-Type, Inverted Pendulum Thrust Stand,” Review of Scientific Instruments, 80, 2009. Conference Presentations and Posters Dextre, R. A., Searcy, B. R., Xu, K. G., “Confined versus Unconfined Analysis of Split Ring Resonator Microplasma Source in a Microwave Electrothermal Thruster,” AIAA SciTech 2016 Forum, San Diego, CA, 2016. AIAA-2016-1945. Dextre, R. A., Xu, K. G., “Status of Development and Measurement of a Microwave Microplasma Source for Micropropulsion,” 51st AIAA Joint Propulsion Conference, Orlando, FL, 2015. AIAA-2015-3724. Blair, L. M., Xu, K. G.,“Langmuir Probe Diagnostics of an Atmospheric-Pressure Microplasma,” AIAA Aviation 2015 Forum, Dallas, TX, 2015. AIAA-2015-2805 Jacobs, S. V., Xu, K. G., “Electron Temperature in a Methane-Air Flame under a DC Electric Field,” AIAA Aviation 2015 Forum, Dallas, TX, 2015. AIAA-2015-2657 Jacbos, S.V., Xu, K.G., "Measurement of Plasma Activity and Combustion Radical Production in a 1D Premixed Methane-Air Flame," 50th AIAA Joint Propulsion Conference, Cleveland, OH, 2014. AIAA-2014-3982. Xu, K.G., Williams, L.T., "A Simple Model for Atmospheric Microplasma Sheath," 41st IEEE International Conference on Plasma Science, Washington, DC, 2014. ICOPS 5C-1 Xu, K.G, “Micro-Propulsion Concepts Utilizing Microplasma Generators,” 33rd International Electric Propulsion Conference, Washington, DC, 2013. IEPC-2013-084 Kolasinski, K. M., Harlow, W., Xu, K. G., “Optimum Antenna Design for Microplasma Generation,” 2013 IEEE Pulsed Power & Plasma Science Conference, San Francisco, CA, 2013. Xu, K.G., Dao, H., Walker, M.L.R., “Potential Contours in Ion Focusing Hall Thruster,” 48th AIAA Joint Propulsion Conference, Atlanta, GA, 2012. AIAA-2012-3790 Xu, K.G., Walker, M.L.R., “Plume Characterization of an Ion Focusing Hall Thruster,” 47th AIAA Joint Propulsion Conference, San Diego, CA, 2011. AIAA-2011-5588 Xu, K.G., Walker, M.L.R., “Technique to Collimate Ions in a Hall Effect Thruster Discharge Chamber,” 57th JANNAF Propulsion Meeting, Colorado Spring, CO, 2010. Zhang, Q., Noble, R., Meyers, A., Xu, K., Lieuwen, T., “Characterization of Fuel Composition Effects in H2/CO/CH4 mixtures Upon Lean Blowout,” ASME/IGTI Turbo Expo, Reno, NV, 2005. Dissertations and Theses Stewart Jacobs, "A Study of Ion and Electron Response to DC Electric Fields in a Premixed Methane-Air Flame," M.S. Thesis, 2015. Paulo Salvador, "A Study of Electric Field Modified Flames with Variable Burner and Anode Placement For Rocket Combustor Emulation," M.S. Thesis, 2016.