Results 151 to 160 of about 185,781 (197)
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Journal of the Institution of Electrical Engineers, 1963
Interest in the use of plasma devices as amplifiers and oscillators at microwave frequencies has been stimulated by the increased knowledge of plasma physics gained from thermonuclear research. Although of small value to the microwave engineer at present, these techniques may provide the means of attaining higher operating frequencies than those ...
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Interest in the use of plasma devices as amplifiers and oscillators at microwave frequencies has been stimulated by the increased knowledge of plasma physics gained from thermonuclear research. Although of small value to the microwave engineer at present, these techniques may provide the means of attaining higher operating frequencies than those ...
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IET Conference on High Power RF Technologies, 2009
A technique has been developed for melting holes in masonry as an alternative to conventional drilling. Microwaves are applied to a tungsten rod inside a section of waveguide, which is terminated by a short circuit. The rod protrudes from the waveguide, via a small hole, and is placed against the masonry to be drilled.
S.R. Wylie, A.I. Al-Shamma'a, A. Shaw
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A technique has been developed for melting holes in masonry as an alternative to conventional drilling. Microwaves are applied to a tungsten rod inside a section of waveguide, which is terminated by a short circuit. The rod protrudes from the waveguide, via a small hole, and is placed against the masonry to be drilled.
S.R. Wylie, A.I. Al-Shamma'a, A. Shaw
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2011
This thesis is concerned mainly with developing accurate microwave methods for determining electron-density distributions in transient plasma columns. Two new methods have been developed and these have been evaluated by comparing with other methods.
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This thesis is concerned mainly with developing accurate microwave methods for determining electron-density distributions in transient plasma columns. Two new methods have been developed and these have been evaluated by comparing with other methods.
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PTGMTT National Symposium Digest, 2005
Since the inception of modern plasma research, microwaves have played an important role. It has first served as a diagnostic tool to determine such properties of the plasma as electron density, collision frequency and electron temperature. Second the plasma with an applied magnetic field has served as a medium with interesting propagation properties ...
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Since the inception of modern plasma research, microwaves have played an important role. It has first served as a diagnostic tool to determine such properties of the plasma as electron density, collision frequency and electron temperature. Second the plasma with an applied magnetic field has served as a medium with interesting propagation properties ...
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Nature, 1962
A striated r-f discharge in argon was produced by highpower, continuous- wave, 3.4-cm wavelength radiation focused into the central region of a discharge vessel. The conditions are approximates 2 kw source power and 40 to 100 mm Hg argon pressure, and the effects of varying the power and pressure are described. (D.L.C.)
J. ALLISON, A. L. CULLEN, A. ZÁVODY
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A striated r-f discharge in argon was produced by highpower, continuous- wave, 3.4-cm wavelength radiation focused into the central region of a discharge vessel. The conditions are approximates 2 kw source power and 40 to 100 mm Hg argon pressure, and the effects of varying the power and pressure are described. (D.L.C.)
J. ALLISON, A. L. CULLEN, A. ZÁVODY
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Industrial microwave plasma polymerization
Thin Solid Films, 1984Abstract The concept as well as the design of a high rate, large area plasma polymerization plant using a plasma generated by microwaves is introduced. Some properties of films deposited from different hydrocarbons are presented. They exhibit properties which are intermediate between polymeric films grown from hydrocarbons and amorphous carbon or i-C
J. Kieser, M. Neusch
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Plasma relativistic microwave electronics
Plasma Physics Reports, 2001The principles of plasma relativistic microwave electronics based on the stimulated Cherenkov emission of electromagnetic waves during the interaction of a relativistic electron beam with a plasma are formulated. A theory of relativistic Cherenkov plasma microwave oscillators and amplifiers is developed, and model experimental devices are elaborated ...
M. V. Kuzelev +4 more
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Physics World, 1988
A plasma of easily-attained parameters could be used as a phase-conjugate reflector for subcentimetre electromagnetic (EM) waves, according to I. Nebenzahl of the Hebrew University, Jerusalem and colleagues at the University of California, Irvine (Phys.Fluids. 31 2144).
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A plasma of easily-attained parameters could be used as a phase-conjugate reflector for subcentimetre electromagnetic (EM) waves, according to I. Nebenzahl of the Hebrew University, Jerusalem and colleagues at the University of California, Irvine (Phys.Fluids. 31 2144).
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Microwave–plasma interaction experiment
American Journal of Physics, 1984A microwave–plasma interaction experiment for laboratory courses is described. The experiment employs a conventional microwave oven to generate breakdown plasmas over a pressure range of 0.02 to 36 Torr in argon. Temporally resolved measurements of forward, reflected, and transmitted microwave power are reported, as well as plasma optical emission ...
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Microwave Diagnostics of Plasmas
IEEE Transactions on Nuclear Science, 1964The theory of wave propagation in plasma media where temperature and collision effects are important is formulated by combining the wave equation and Boltzmann's equation for average electron velocity. Usually it is assumed that the electron collision frequency is independent of velocity, but most gases are characterized by a velocity-dependent ...
R. W. Grow, C. C. Johnson, A. S. Jones
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