Polk, James

Combined from CaltechAUTHORS

• Polk, James E. (2024) A critical review and meta-analysis of xenon-on-carbon sputter yield data; Journal of Applied Physics; Vol. 135; No. 4; 040701; 10.1063/5.0180720
• Guerrero, Pablo and Mikellides, Ioannis G., el al. (2018) Determination of the work function distribution of a LaB_6 hollow cathode based on plasma potential measurement and 2D plasma numerical simulation; ISBN 9781624105708; 2018 Joint Propulsion Conference; Art. No. 2018-4511; 10.2514/6.2018-4511
• Yanes, Nelson J. and Guerrero-Vala, Pablo, el al. (2016) Ion Acoustic Turbulence and Ion Energy Measurements in the Plume of the HERMeS Thruster Hollow Cathode; ISBN 978-1-62410-406-0; 52nd AIAA/SAE/ASEE Joint Propulsion Conference; Art. No. 2016-5028; 10.2514/6.2016-5028
• Polk, James E. and Mikellides, Ioannis G., el al. (2016) Barium depletion in hollow cathode emitters; Journal of Applied Physics; Vol. 119; No. 2; Art. No. 023303; 10.1063/1.4938489
• Capece, Angela M. and Polk, James E., el al. (2015) Decoupling the Thermal and Plasma Effects on the Operation of a Xenon Hollow Cathode With Oxygen Poisoning Gas; IEEE Transactions on Plasma Science; Vol. 43; No. 9; 3249-3255; 10.1109/TPS.2015.2465845
• Polk, James E. and Capece, Angela M. (2015) Materials Characterization of Impregnated W and W-Ir Cathodes after Oxygen Poisoning; Applied Surface Science; Vol. 338; 27-34; 10.1016/j.apsusc.2015.02.116
• Sekerak, Michael J. and Longmier, Benjamin W., el al. (2015) Azimuthal Spoke Propagation in Hall Effect Thrusters; IEEE Transactions on Plasma Science; Vol. 43; No. 1; 72-85; 10.1109/TPS.2014.2355223
• Capece, Angela M. and Polk, James E., el al. (2014) X-ray Photoelectron Spectroscopy Study of BaWO_4 and Ba_2CaWO_6; Journal of Electron Spectroscopy and Related Phenomena; Vol. 197; 102-105; 10.1016/j.elspec.2014.10.001
• Polk, James E. and Mikellides, Ioannis G., el al. (2014) The effect of cathode geometry on barium transport in hollow cathode plasmas; Journal of Applied Physics; Vol. 115; No. 18; Art. No. 183301; 10.1063/1.4873168
• Capece, Angela M. and Polk, James E., el al. (2014) Oxygen transport in the internal xenon plasma of a dispenser hollow cathode; Journal of Applied Physics; Vol. 115; No. 15; Art. No. 153302; 10.1063/1.4871755
• Coleman, Max and Hecht, Michael H., el al. (2012) In situ geochronology as a mission-enabling technology; ISBN 978-1-4577-0556-4; 2012 IEEE Aerospace Conference; 1-8; 10.1109/AERO.2012.6187053
• Polk, James E. and Mikellides, Ioannis G., el al. (2009) Tungsten and barium transport in the internal plasma of hollow cathodes; Journal of Applied Physics; Vol. 105; No. 11; 113301; 10.1063/1.3111970
• Przybylowski, J. N. and Polk, J. E., el al. (2009) Evidence for ion acceleration by oscillations in the discharge plasma of ion engines; ISBN 978-1-4244-2617-1; 2009 IEEE International Conference on Plasma Science - Abstracts; 10.1109/PLASMA.2009.5227732
• Przybylowski, JoHanna N. and Polk, James E., el al. (2008) Spatially Mapping the Ion Energy Distributions in Hollow Cathode Discharges; ISBN 978-1-60086-992-1; 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; Art. No. 2008-5206; 10.2514/6.2008-5206
• Grubisic, A. N. and Polk, J. E., el al. (2008) Ion Energies in an Open-Diode Hollow Cathode Discharge; ISBN 978-1-60086-992-1; 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; Art. No. 2008-5095; 10.2514/6.2008-5095
• Polk, James E. and Mikellides, Ioannis G., el al. (2008) Tungsten and Barium Transport in the Internal Plasma of Hollow Cathodes; ISBN 978-1-60086-992-1; 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; Art. No. 2008-5295; 10.2514/6.2008-5295
• Capece, Angela M. and Polk, James E., el al. (2008) Current and Temperature Thresholds for Short-Term Oxygen Poisoning of Hollow Cathodes; ISBN 978-1-60086-992-1; 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; 10.2514/6.2008-4813
• Polk, J. E. and Marrese-Reading, C. M., el al. (2007) Scanning optical pyrometer for measuring temperatures in hollow cathodes; Review of Scientific Instruments; Vol. 78; No. 9; Art. No. 093101; 10.1063/1.2774828
• Moeller, Robert C. and Polk, James E. (2007) Preliminary Characterization of an MPD Thruster with Extended Anode and Multichannel Hollow Cathode; ISBN 978-1-62410-011-6; 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; Art. No. 2007-5281; 10.2514/6.2007-5281
• Kolasinski, Robert D. and Polk, James E., el al. (2007) Sputtering yield measurements at glancing incidence using a quartz crystal microbalance; Journal of Vacuum Science and Technology A; Vol. 25; No. 2; 236-245; 10.1116/1.2435375