Search Results - "Denning, C.M."

Measurements on an argon helicon plasma with variable magnetic nozzle by Denning, C.M., Scharer, J.E.

“…Summary form only given. The possible existence of a plasma double layer arising at the field gradient of a magnetic nozzle is investigated in a high-density…”
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Low-Pressure Helicon-Plasma Discharge Initiation via Magnetic Field Ramping by Wiebold, M., He Ren, Denning, C.M., Scharer, J.E.

“…Discharge initiation at low pressures and flow rates is investigated in the Madison helicon experiment flowing helicon source. At low pressures (below 14-sccm…”
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Diagnostics and Computational Modeling of Argon, Helium, and Deuterium Helicon Plasmas in Nonuniform Magnetic Fields by Denning, C.M., Scharer, J.E.

“…Summary form only given. Radiofrequency helicon waves are excited in argon, helium, and deuterium at a frequency of 13.56 MHz with input RF powers of up to 2.5…”
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Observations of neutral depletion and ion acceleration in a high-power argon helicon plasma by Denning, C.M., Wiebold, M., Scharer, J.E.

“…Summary form only given as follows. Measurements are performed on an argon helicon plasma with an axial magnetic field (with and without a magnetic nozzle) of…”
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Experimental Study of Laser-Initiated Radiofrequency-Sustained High-Pressure Plasmas by Siqi Luo, Scharer, J.E., Thiyagarajan, M., Denning, C.M.

“…Experiments are performed using 193-nm ultraviolet laser preionization of a seed gas in atmospheric pressure range argon and nitrogen to initiate a discharge…”
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RF Matchings Time Resolved Impedance, Power and Interferometer Measurements of Laser Initiated, RF Sustained Atmospheric Pressure Plasmas by Siqi Luo, Thiyagarajan, M., Scharer, J., Akhtar, K., Denning, C.M.

“…Summary form only given. The feasibility of laser ionization and radio frequency sustainment of high-pressure seeded plasmas in argon has been demonstrated by…”
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Efficient Creation of Laser Initiated, RF Sustained Atmospheric Pressure Range Plasmas by Scharer, J., Siqi Luo, Thiyagarajan, M., Akhtar, K., Denning, C.M.

“…Summary form only given. We examine 193 nm (6.4 eV) UV photon ionization of low ionization level (6.1 eV) seed (15 mtorr) gas to reduce the power levels for…”
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Characterization of laser produced tetrakis (dimethylamino) ethylene plasma in a high-pressure background gas by Akhtar, K., Scharer, J.E., Tysk, S.M., Denning, C.M.

“…We present an interferometric and spectroscopic characterization of ultraviolet (UV) laser photoionization of a low ionization potential organic vapor,…”
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Optical, wave measurements, and modeling of helicon plasmas over a wide range of magnetic fields by Denning, C.M., Tysk, S.M., Scharer, J.E., Siqi Lou, Akhtar, K.

“…Summary form only given, as follows. helix antenna operating at 13.56 MHz for static magnetic fields ranging from 200-1000 G1 Diagnostics include Langmuir,…”
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Measurements of Air Breakdown and Scaling to Microwaves Using 193 nm Focused Laser Radiation by Thiyagarajan, M., Scharer, J., Denning, C.M., Siqi Luo

“…We report the measurements and analysis of air breakdown processes by focusing 193 nm, 200 mJ, 10 MW high power UV laser radiation on to a 10 - 20 μm spot size…”
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