Results 221 to 230 of about 228,369 (266)

D.c. breakdown voltage characteristics in supercritical helium: breakdown in nonuniform fields

Cryogenics, 1986
Abstract This Paper describes the results of an experimental study on the d.c. breakdown voltage characteristic of supercritical helium under a non-uniform electric field. The study was carried out to further the development of superconducting magnets cooled by supercritical helium.
S. Nakayama, D. Ito
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AC breakdown characteristics of epoxy nanocomposites

IEEE Transactions on Dielectrics and Electrical Insulation, 2011
Experiments were conducted to measure the ac breakdown strength of epoxy alumina nanocomposites with different filler loadings of 0.1, 1 and 5 wt%. The experiments were performed as per the ASTM D 149 standard on samples of thickness 0.5 mm, 1 mm and 3 mm in order to study the effect of thickness on the ac breakdown strength of epoxy nanocomposites. In
Preetha, P, Thomas, Joy M
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Breakdown characteristics of water walled arcs

Journal of Physics D: Applied Physics, 1988
The breakdown voltage of a high-pressure argon arc is increased by about 80% if water is present in the vessel, and is further increased if the discharge is forced close to the water surface by a metal conductor outside the arc chamber.
N Tait, F L Curzon, B Ahlborn
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Generalized breakdown voltage characteristic of the pseudospark

Applied Physics Letters, 1994
A simple empirical scaling law is determined for the pseudospark breakdown voltage characteristic that includes the effect of the cavity dimension. It is found that the breakdown voltage characteristic has two distinctive regimes: the breakdown voltage is a function of the product of the gas pressure and the anode–cathode distance pd and a function of ...
M. J. Rhee, C. J. Liu
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Breakdown characteristics of hydrofluorocarbons in gas phase

Proceedings of Conference on Electrical Insulation and Dielectric Phenomena - CEIDP '96, 2002
AC breakdown voltage (BDV) measurements were carried out for four kinds of hydrofluorocarbons (HFCs), CCl/sub 2/F/sub 2/, CClHF/sub 2/, and nitrogen in gas phase of 5 to 200 kPa using sphere-plate and a needle-plate gaps. It was found from comparison in BDV among these gases, that all HFCs are less than 60% of CCl/sub 2/F/sub 2/ and less than 80% of ...
S. Sato, M. Tsukiji, K. Kimura
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Characteristic functions for the tip regime in dielectric breakdown

Physical Review B, 1990
Nouvelle methode pour obtenir la structure d'echelle de la mesure harmonique des processus de croissance auto-similaires.
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Spectral characteristics of vortex breakdown flowfields

The Physics of Fluids, 1979
Laser-Doppler anemometer measurements upstream and in the wakes of vortex breakdowns of bubble and spiral types are described. Spectral analysis of the data indicates prominent oscillations in the wakes at less than 10 Hz. These oscillations correspond closely to theoretical predictions of the linearly most unstable normal modes of the time-averaged ...
A. K. Garg, S. Leibovich
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Breakdown voltage characteristic of a pseudospark device

Physics of Fluids B: Plasma Physics, 1992
The breakdown voltage of a pseudospark device is measured for a wide range of gas pressure and anode–cathode gap distance. The data are analyzed by least-squares-fit methods, and the breakdown voltage is expressed by an empirical function of the gas pressure and the anode–cathode gap distance. It is found that the breakdown voltage is a function of p2d,
M. J. Rhee, B. N. Ding
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Characteristics of laser induced gas breakdown

SPIE Proceedings, 2003
We report characteristics of laser induced gas breakdown by changing wavelengths, gas media as well as controlling energies. Pulsed YAG laser beam was focused into the gas chamber in order to study breakdown thresholds and laser transmission through produced plasmas.
Kensuki Murai, Masahiro Tsukamoto
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Air Breakdown Characteristics at High Altitudes

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013
Present investigations have been devoted to analysis of electron ionization and elimination processes at early stages of electric discharge development at altitudes 0$100 km. In the report we consider processes of ionization in the external field and due to background ionization, as well as of attachment, detachment of electrons in collisions with ...
Vladimir Bychkov, Nikolai Ardelyan, Konstantin Kosmachevskii, Sergey Volkov, Aleksander Kuranov, Aleksander Savarovsky   +5 more
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