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Publications and Other Documents
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• "High Current Density Cathode Facility," X. He, J. Scharer, J. Booske, S. Sengele, V. Vlahos, N. Jordan, R. Gilgenbach, Poster Presentation, IEEE International Vacuum Electronics Conference, Kitakyushu, Japan (2007) Download Powerpoint
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• Laser and RF Plasma Source and Diagnostic Additions-4/30/2007 View PDF
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• Siqi Luo, John E. Scharer, Magesh Thiyagarajan, and C. Mark Denning, “Experimental Study of Laser-Initiated Radiofrequency-Sustained High-Pressure Plasmas,” IEEE Transactions on Plasma Science, Dec. (2006). View PDF
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• Aarti Singh, John E. Scharer, John H. Booske, and John G. Wohlbier, “Second- and Third-Order Signal Predistortion for Nonlinear Distortion Suppression in a TWT,” IEEE Transactions on Electron Devices, May, (2005). View PDF
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• Aarti Singh, John G. Wohlbier, John H. Booske, and John 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). View PDF
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• Kamran Akhtar, John E. Scharer, Shane M. Tysk, and C. Mark Denning, “Characterization of laser produced tetrakis (dimethylamino) ethylene plasma in a high-pressure background gas,” IEEE Transactions on Plasma Sciences, April, (2004). View PDF
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• Shane M. Tysk, C. Mark Denning, John E. Scharer, and Kamran Akhtar, “Optical, wave measurements, and modeling of helicon plasmas for a wide range of magnetic fields,” Physics of Plasmas, March, (2004). View PDF
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• Shane M. Tysk, C. Mark Denning, John E. Scharer, Benjamin O. White, and Kamran 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). View PDF
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• Kamran Akhtar, John E. Scharer, Shane M. Tysk, and C. Mark Denning, “Radio-frequency sustainment of laser initiated, high-pressure air constituent plasmas,” American Institute of Physics, 15th Topical Conference on Radio Frequency Power in Plasmas, May, (2003). View PDF
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• Kamran Akhtar, John E. Scharer, Shane M. Tysk, and Enny Kho, "Plasma interferometry at high pressures," Review of Scientific Instruments, February, (2003).
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• J. Scharer, A. Degeling, G. Borg, and R. Boswell, “Measurements of helicon wave propagation and Ar II emission,” Physics of Plasmas, September, (2002). View PDF
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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). View PDF
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• M. Wirth, A. Singh, J. 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. View PDF
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• G. Ding, J. 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). View PDF
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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). View PDF
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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). View PDF
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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). View PDF
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• G. Ding, J. Scharer and K. Kelly, “Laser Plasma Formation,” Jour. Of Applied Physics 84, 1236 (1998).
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• J. 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. 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. Scharer, J. Jacquinot, P. Lallia and F. Sand, “Fokker-Planck Calculations for JET ICRF Heating Scenarios,” Nuclear Fusion 25, 435 (1985).
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