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Publications
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J. Way, J. Hummelt, J. E. Scharer "Experimental measurements of multiphoton enhanced air breakdown by a subthreshold intensity excimer laser," Journal of Applied Physics, 106, 083303 2009.
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M. Wiebold, H. Ren, J. E. Scharer, C. M. Denning "Low Pressure Helicon Discharge Initiation Via Magnetic Field Ramping," IEEE Transactions on Plasma Sciences, 37 11, Nov. 2009.
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X. He, J. E. Scharer, J. Booske, S. Sengele "One-dimensional combined field and thermionic emission model and comparison with experimental results," Journal of Vacuum Science and Technology, April 2008.
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M. Thiyagarajan, J. E. Scharer. "Experimental Investigation of 193nm Laser Breakdown in Air," IEEE Plasma Sciences Special Issue on Pulsed Power, 2008.
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M. Thiyagarajan, J. E. Scharer. "Experimental Investigation of Ultraviolet Laser Induced Plasma Density and Temperature Evolution in Air," Journal of Applied Physics, July 2008.
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C. M. Denning, M. Wiebold, J. E. Scharer. "Observations of neutral depletion and plasma acceleration in a flowing high-power argon helicon plasma," Physics of Plasmas, July 2008 [Copyright Notice]
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S. Luo, C. M. Denning, J. E. Scharer. "Laser-rf creation and diagnostics of seeded atmospheric pressure air and nitrogen plasmas," Journal of Applied Physics, July 2008
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X. He, J. E. Scharer, J. Booske, S. Sengele, V. Vlahos, N. Jordan, R. Gilgenbach. "High Current Density Cathode Facility," Poster Presentation, IEEE International Vacuum Electronics Conference, Kitakyushu, Japan, 2007.
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Laser and RF Plasma Source and Diagnostic Additions - 4/30/2007
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S. Luo, J. E. Scharer, M. Thiyagarajan, and C. M. Denning. "Experimental Study of Laser-Initiated Radiofrequency-Sustained High-Pressure Plasmas," IEEE Transactions on Plasma Science, December 2006.
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A. Singh, J. E. Scharer, J. Booske, and J. Wohlbier, “Second- and Third-Order Signal Predistortion for Nonlinear Distortion Suppression in a TWT,” IEEE Transactions on Electron Devices, May 2005.
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A. Singh, J. Wohlbier, J. Booske, and J. E. Scharer, “Experimental verification of the mechanisms for nonlinear harmonic growth and suppression by harmonic injection in a traveling wave tube,” Physical Review Letters, May 2004.
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K. Akhtar, J. E. Scharer, S. Tysk, and C. M. Denning, “Characterization of laser produced tetrakis (dimethylamino) ethylene plasma in a high-pressure background gas,” IEEE Transactions on Plasma Sciences, April 2004.
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S. M. Tysk, C. M. Denning, J. E. Scharer, and K. Akhtar, “Optical, wave measurements, and modeling of helicon plasmas for a wide range of magnetic fields,” Physics of Plasmas, March 2004.
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S. M. Tysk, C. M. Denning, J. E. Scharer, B. O. White, and K. Akhtar, “Experimental measurements and modeling of a helicon plasma source with large axial density gradients,” American Institute of Physics, 15th Topical Conference on Radio Frequency Power in Plasmas, May 2003.
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K. Akhtar, J. E. Scharer, S. M. Tysk, and C. M. Denning, “Plasma interferometry at high pressures," Review of Scientific Instruments, February 2003.
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J. E. Scharer, A. Degeling, G. Borg, and R. Boswell, “Measurements of helicon wave propagation and Ar II emission,” Physics of Plasmas, September 2002.
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K. L. Kelly, J. E. Scharer, E. S. Paller, and G. Ding, “Laser Ionization and Radiofrequency Sustainment of High-Pressure Seeded Plasmas,” Jour. Of Applied Physics, July 2002.
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M. Wirth, A. Singh, J. E. Scharer and J. Booske, “Third – Order Intermodulation Reduction by Harmonic Injection in a TWT Amplifier,” IEEE Trans. on Electron Devices, pp. 1082, vol. 49, 2002.
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G. Ding, J. E. Scharer and K. Kelly, “Diagnostics and Analyses of Decay Processes in Laser Produced Tetrakis(dimehty-amino) Ethylene Plasma,” Physics of Plasmas 8(1), 334 (2001).
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E. S. Paller, J. E. Scharer, K. Akhtar, K. Kelly, G. Ding, “Radiofrequency Initiation and Radiofrequency Sustainment of Laser Initiated Seeded High Pressure Plasmas,” Conference Proceeding (2001).
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X. Guo, J. E. Scharer, Y. Mouzouris and L. Louis, “Helicon Experiments and Simulations in Nonuniform Magnetic Field,” Physics of Plasmas 6 (8), 3400 (1999).
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K. L. Kelly, J. E. Scharer, G. Ding, M. Bettenhausen, and S. P. Kuo, “Microware reflections from an Ultra-violet Laser Produced Plasma Sheet.” Jrl. Applied Physics 85(1), 63 (1999).
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Y. Mouzouris and J. E. Scharer, “Wave Propagation and Absorption Simulations for Helicon Sources,” Physics of Plasmas 1(4), 875 (1998).
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G. Ding, J. E. Scharer and K. Kelly, “Effects of rapidly decaying plasmas on Langmuir probe measurements,” Jour. Of Applied Physics 84, 1236 (1998).
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J. E. Scharer, O. Eldridge, S. Chang, Y Zhang, M. Bettenhausen and N. Lam, “Electron Cyclotron Wave Propagation, Absorption and Backscatter Measurements in a Laboratory Plasma,” IEEE Trans. On Plasma Science, 21, 271 (1993).
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W. Shen, J. E. Scharer, B. Porter, N. Lam, and K. Kelly, “Properties of an Ultraviolet Laser Created Plasma Sheet for a Microwave Reflector,” Jour. Applied Physics 78, 6974 (1995).
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Y. S. Zhang and J. E. Scharer, “Plasma Generation in an Organic Molecular Gas by an Ultraviolet Laser Pulse,” Jour. Of Applied Physics, 73, 4779 (1993).
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J. E. Scharer, J. Jacquinot, P. Lallia and F. Sand, “Fokker-Planck Calculations for JET ICRF Heating Scenarios,” Nuclear Fusion 25, 435 (1985).
