This Site umd.edu

Publications

Principal Investigator: Thomas M. Antonsen

Co-Principal Investigators:  Konstantinos Papadopoulos, Andreas Neuber, and Walter Gekelman

Publications

  1. Limiting Current of Intense Electron Beams in a Decelerating Gap, G. S. Nusinovich, B. L. Beaudoin, C. Thompson, J. A. Karakkad, and T. M. Antonsen, Jr., Phys. Plasmas 23, 023114 (2016); doi:10.1063/1.4942175.
  2. A Megawatt Solid-State Modulator for High Repetition Rate Pulse Generation, Y. Wang, P. Pribyl, and W. Gekelman, Rev. Sci. Instrum. 87, 023509 (2016); doi:10.1063/1.4941678.
  3. Low-Frequency Waves in HF Heating of the Ionosphere,  A. S. Sharma, B. Eliasson, G. M. Milikh, A. Najmi, K. Papadopoulos, X. Shao, and A. Vartanyan, in Low-Frequency Waves in Space Plasmas, Geophysical Monograph 216, First  Edition, edited by Andreas Keiling, Dong-Hun Lee, and Valery Nakariakov, 2016 American Geophysical Union (John Wiley & Sons, Inc, 2016).
  4. Ion-Acoustic Shocks with Self-Regulated Ion Reflection and Acceleration, M. A. Malkov, R. Z. Sagdeev, G. I. Dubnikova, T. V. Liseykina, P. H. Diamond, K. Papadopoulos, C. S. Liu, and J. J. Su, Phys. Plasmas 23, 043105 (2016); doi:10.1063/1.4945649.
  5. HF Propagation and Induced Ionospheric Turbulence in the Magnetic Equatorial Region, B. Eliasson and K. Papadopoulos, J. Geophys. Res. Space Phys. 121, (2016); doi:10.
  6. An Update to the Horizontal Wind Model (HWM): The Quiet Time Thermosphere, Douglas P. Drob, John T. Emmert, John W. Meriwether, Jonathan J. Makela, Eelco Doornbos, Mark Conde, Gonzalo Hernandez, John Noto, Katherine A. Zawdie, Sarah E. McDonald, Joe D. Huba, and Jeff, H. Klenzing, Earth Space Sci. 2, 301-319 (2015); doi:10.1002/2014EA000089.
  7. Numerical Study of Anomalous Absorption of O Mode Waves on Magnetic Field-Aligned Striations, B. Eliasson and K. Papadopoulos, Geophys. Res. Lett. 42, 2603-2611 (2015); doi:10.1002/2015GL063751.
  8. Generation of Shear Alfvén Waves by Repetitive Electron Heating, Y. Wang, W. Gekelman, P. Pribyl, B. Van Compernolle, and K. Papadopoulos, J. Geophys. Res. Space Phys. 121 (2015); doi:10.1002/2015JA022078.
  9. Studies of the Ionospheric Turbulence Excited by the Fourth Gyroharmonic at HAARP, A. Najmi, G. Milikh, Y. M. Yampolski, A. V. Koloskov, A.  A. Sopin, A.  Zalizovski, P.  Bernhardt, S. Briczinski, C. Siefring, K. Chiang, Y. Morton, S. Taylor, A. Mahmoudian, W. Bristow, M. Tuohoniemi, and K. Papadopoulos, J. Geophys. Res. Space Phys. 120, 6646-6660 (2015); doi:10.1002/2015JA021341.
  10. Can HF Heating Generate ESF Bubbles?, K.  A. Zawdie and J. D. Huba, Geophys. Res. Lett. 41, 8155-8160 (2014); doi: 10.1002/2014GL062293.
  11. Generation and Detection of Super Small Striations by F Region HF Heating, A. Najmi, G. Milikh, J. Secan, K. Chiang, M. Psiaki, P. Bernhardt, S. Briczinski, C. Siefring, C. L. Chang, and K. Papadopoulos, J. Geophys. Res. Space Phys.119, 6000-6011 (2014); doi:10.1002/2014JA020038.
  12. Incidence Angle Dependence of Langmuir Turbulence and Artificial Ionospheric Layers Driven by High-Power HF-Heating, B. Eliasson, G. Milikh, X. Shao, E. V. Mishin, and K. Papadopoulos, J. Plasma Phys. 81, 415810201 (2014); doi:10.1017/S0022377814000968.
  13. Analysis of High Field Effects on the Steady-State Current-Voltage Response of Semi-Insulating 4H-SiC for Photoconductive Switch Applications, R. Tishuhamara, R. P. Joshi, D. Mauch, J. C. Dickens, and A. A. Neuber, J. Appl. Phys. 118 [9], 095701 (2015); doi:10.1063.1.4929809.
  14. High Power Lateral Silicon Carbide Photoconductive Semiconductor Switches and Investigation of Degradation Mechanisms, D. Mauch, W. Sullivan, A. Bullick, A. Neuber, and J. Dickens, IEEE Trans. Plasma Sci. 43 [6], 2021-2031 (2015); doi:10.1109/TPS.2015.2424154.
  15. Evaluation of a Pulsed Ultraviolet Light-Emitting Diode for Triggering Photoconductive Semiconductor Switches, D. Mauch, C. Hettler, W. W. Sullivan, A. A. Neuber, and J. Dickens, IEEE Trans. Plasma Sci. 43 [7], 2182-2186 (2015); doi:10.1109/TPS.2015.2435744.
  16. Preliminary Results of the Artificial Periodic Irregularities Excited by the HAARP HF Heater, S. M. Grach, E. N. Sergeev, N. V. Bakhmetieva, G. Milikh, and A. V. Shindin, Radio Sci. Special Issue (submitted for publication, 2015).
  17. Simulations of Ionospheric Turbulence Produced by HF Heating near the Upper Hybrid Layer, A. Najmi, B. Eliasson, X. Shao, G. Milikh, and K. Papadopoulos, Radio Science Special Issue (submitted for publication, 2015).
  18. Artificial Ionospheric Perturbations  Studied during HAARP May-June 2014 Campaign, E. N. Sergeev, A. V. Shindin, S. M.  Grach, and G. M. Milikh, Radio Sci. Special Issue (submitted for publication, 2015).
  19. Generation of ELF Waves during HF Heating of the Ionosphere at Midlatitudes, A. S. Sharma, B. Eliasson, X. Shao, and K. Papadopoulos, Radio Sci. Special Issue (submitted for publication, 2015).
  20. Generation of Whistler Waves by Continuous HF Heating of the Upper Ionosphere, A. Vartanyan, G. M. Milikh, B. Eliasson, A.  C. Najmi, C. L. Chang, M. Parrot, and K. Papadopoulos, Radio Sci. Special Issue (submitted for publication, 2015).
  21. Temporally Resolved Electron Density of a Repetitive, Nanosecond Pulsed Microdischarge, J. Stephens, A. Fierro, J. Dickens, and A. Neuber, J. Phys. D: Appl. Phys. 47 [46], 465205 (2014); doi:10.1088/0022-3737-47/46/465205.
  22. Optimizing Drive Parameters of a Nanosecond, Repetitively Pulsed Microdischarge High Power 121.6 nm Source, J. Stephens, A. Fierro, D. Trienekens, J. Dickens, and A. Neuber, Plasma Sources Sci. Technol. 24 [1], 015103 (2015); doi:10.1088/0963-0252/24/1/015013.
  23. Stratospheric Analysis and Forecast Errors Using Hybrid and Sigma Coordinates, Stephen D. Eckermann, John P. McCormack, Jun Ma, Timothy F. Hogan, and Katherine A. Zawdie, Mon. Weather Rev. 142, 476 (2013); doi:10.1175/MWR-D-13-00203.1.

Presentations

  1. Novel High-Power  Radio-Frequency Sources for Ionospheric Heating, Brian L. Beaudoin, Gregory S. Nusinovich, Charles Turner, Jayakrishnan A. Karakkad, Amith H. Narayan, Connor Thompson, and  Thomas M. Antonsen, Jr., 2016 IEEE Int. Vacuum Electronic Conference (IVEC), April 2016, Monterey, CA, USA.
  2. On the Physics of Upper-Hybrid Heating, K. Papadopoulos, 22nd Annual RF Ionospheric Interactions Workshop, May 2016, Albuquerque, NM (invited).
  3. New Inroads on the Physics of Upper Huybrid Turbulence, 41st COSPAR Scientific Assembly, August 2016, Istanbul, Turkey (invited).
  4. The Role of Upper Hybrid Turbulence on HF Artificial Ionization, K. Papadopoulos, 41st COSPAR Scientific Assembly, August 2016, Istanbul, Turkey (invited).
  5. Limiting Current of Intense Electron Beams in a Decelerating Gap, G. Nusinovich, Connor Thompson, Brian L. Beaudoin, and T. M. Antonsen, Jr., 2016 IEEE Int. Vacuum Electronic Conference (IVEC), April 2016, Monterey, CA.
  6. Constant Impedance Tunable IOT Power Extraction Circuit, Amith Hulikal Narayan, Brian L. Beaudoin, Charles J. Turner, Nikhil Goyal, and Thomas  M. Antonsen, Jr., 2016 IEEE Int. Vacuum Electronic Conference (IVEC), April 2016, Monterey, CA.
  7. Designing a Magnetron Injection Gun for an Efficient Mobile Ionospheric Heating Source, Jayakrishnan A. Karakkad, Brian L. Beaudoin, John C. Rodgers, Gregory S. Nusinovich, and Thomas M. Antonsen, Jr., 2016 IEEE Int. Vacuum Electronic Conference (IVEC), April 2016, Monterey, CA.
  8. Ionospheric Modifications Using Mobile, High Power HF Transmitters Based on HPM Technology, K. Papadopoulos, ICOPS, May 2015, Belek, Antalya, Turkey (invited keynote).
  9. High Power Sources for the Physics of Ionospheric Modification, B. L. Beaudoin, T. M. Antonsen, Jr., N. Goyal, I. Haber, T. W. Koeth, A. H. Narayan, G. Nusinovich, K. Ruisard, and J. C. Rodgers, PSPPA-2015, Maui, HI.
  10. Novel High Power Sources for the Physics of Ionospheric Modification, B. L. Beaudoin, T. M.  Antonsen, Jr., I. Haber, T. W. Koeth, A. H. Narayan, G. Nusinovich, K. Ruisard, and J. C. Rodgers, 6th Int. Particle Accelerator Conference (IPAC), May 2015, Richmond, VA, USA.
  11. Studies of the Ionospheric Turbulence Excited by the Fourth Gyroharmonic at HAARP, G. Milikh, 14th Int. Ionospheric Effects Symposium, May 2015, Alexandria, VA.
  12. Theoretical Studies of Fast Stochastic Electron Heating near the Upper Hybrid layer, A. Najmi, 14th Int. Ionospheric Effects Symposium, May 2015, Alexandria, VA.
  13. Generation of Whistler Waves by Continuous HF Heating of the Upper Ionosphere, A. Vartanyan, 14th Int. Ionospheric Effects Symposium, May 2015, Alexandria, VA.
  14. Ionospheric Raytracing in a Time-Dependent Mesoscale Ionosphere Model, K. A. Zawdie, 14th Int. Ionospheric Effects Symposium, May 2015, Alexandria, VA.
  15. Vlasov Simulations of Ionospheric Turbulence near the Upper Hybrid Resonance and Fourth Gyroharmonic, A. Najmi, B. Ellison, X. Shao, G. Milikh, K. Papadopoulos, Fall AGU Meeting, December 2015, San Francisco, CA.
  16. Characterization of the Optical Properties of GaN: Fe for High Voltage Photoconductive Switch Applications, V. Meyers, D. Mauch, J. Mankowski, J. Dickens, and A. Neuber, Proc. IEEE Pulsed Power Conference (PPC), 2015 IEEE, pp. 189-192.
  17. Optimization of the Optical Triggering of SiC Photocnductive Semiconductor Switches, D. Mauch, J. Shaver, V. Meyers, D. Thomas, J. Mankowski, J. Dickens, and A. Neuber, IEEE Pulsed Power Conference (PPC), 2015 IEEE.
  18. Characterization of Intra-Bandgap Defect States through Leakage Current Analysis for Optimization of 4H-SiC Photoconductive Switches, David Thomas, Daniel Mauch, J. Dickens, and A. Neuber, 2015 Pulsed Power Conference (PPC), May 31-June 4, 2015, Austin, TX, USA.
  19. A 2D Finite Difference Simulation to Investigate the High Voltage Blocking Characteristics of 4H-SiC Photoconductive Semiconductor Switches, J. Shaver, D. Mauch, R. Joshi, J. Mankowski, J. Dickens, and A. Neuber, 2015 Pulsed Power Conference (PPC), May 2015, Austin, TX, p. 193-195.
  20. Tunable Electrically Small Antenna at 45 to 100 MHz, B. Esser, S. Beeson, J. Mankowski, J. Dickens, and A. Neuber,2015 IEEE Int. Conference on Plasma Science (ICOPS), May 2015, Belek, Antalya, Turkey.
  21. Nanosecond, Pulsed Microdischarge UV and VUV Sources, J. Stephens, D. Mauch, S. Feathers, J. Mankowski, J. Dickens, and A. Neuber, 2015 IEEE Int. Conference on Plasma Science (ICOPS), May 2015, Belek, Antalya, Turkey.
  22. A New Paradigm in Sources and Physics of High-Power Ionospheric Modifications, K. Papadopoulos, 20th Annual RF Ionospheric Interactions Workshop, April 2015, Arecibo, Puerto Rico (invited review).
  23. Upper Hybrid Effects in Artificial Ionization, K. Papadopoulos, Fall AGU Meeting, December 2014, San Francisco, CA (invited talk).
  24. Analysis of a Tunable Electrically Small Antenna, B. Esser, S. Beeson, J. Dickens, J. Mankowski, and A. Neuber, 2015 Pulsed Power Conference (PPC), May 2015, Austin, TX.
  25. Overview of High Voltage 4H-SiC Photoconductive Semiconductor Switch Efforts at Texas Tech University, Daniel Mauch, Chris White, David Thomas, Andreas Neuber, and James Dickens, 2014 IEEE International Power Modulator and High Voltage Conference (IPMHVC), June 1, 2014, Santa Fe, NM.

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