Showing papers in "Journal of Electrostatics in 1982"

TL;DR: In this article, pre-breakdown and breakdown events under quasi-uniform fields in n-hexane, iso-octane, cyclohexane and toluene have been photographed.

TL;DR: In this article, a calculation method was proposed for the determination of profiles of stable menisci formed at one end of a capillary raised to an electric potential, where the Laplace equation relative to potential and the pressure balance equation at the liquid surface were solved simultaneously.

TL;DR: In this article, anon injection in solutions of triisoamylammonium picrate in cyclohexane was investigated up to very high electric fields between parallel plane metallic electrodes.

TL;DR: In this article, a mechanism for the generation of gaseous phase in transformer oil was discussed in terms of electron energy, and it was shown that an average energy of electron calculated was greater than CH bond energy.

TL;DR: In this article, the AC and DC conductivity of solutions of an ionic surfactant (Aerosol OT) in hydrocarbons have been investigated with small AC voltages and with voltage wave-forms, over a wide range of applied voltages, various electrode spacings, the concentration of the surfactants varying from 10−5 to 10−2 Ml−1.

TL;DR: In this article, the effects of hydrostatic pressure, degassing, voltage magnitude and polarity on time lags to breakdown and the pre-breakdown phenomena in transformer oil were investigated using rectangular high voltage pulses and point-plane electrodes.

TL;DR: The electroviscous effect in isotropic liquids, which was related by some authors to the motion accompanying the passage of an electric current, is examined in the light of recent developments concerning the conduction properties of dielectric liquids, the Coulomb force induced instabilities and electroconvection as discussed by the authors.

TL;DR: In this article, it is shown that the laws of electrochemical kinetics, when applied to injection currents through double layers, lead to conduction characteristics expressible in simple mathematical terms and very similar to Nikuradse's.

TL;DR: In this article, a rapidly changing electric field was measured by an optical method using Pockels device, which was successfully applied to the measurement of the electric field with space charge through a simple correction of measured values.

TL;DR: In this article, the polarity effect of breakdown in liquid N 2 (liq.N 2, reverses with pulse width, pressure and electrode distance, and the electron avalanche seems to play an important role.

TL;DR: In this article, the drift velocity of photo injected electrons in liquid hydrogen, liquid neon and liquid helium was measured at several temperatures as a function of the electric field strength up to 100 kV/cm.

TL;DR: In this paper, a theory for the process of charge convection in a laminar tube flow is presented for liquid heptane flowing through stainless-steel tubes of radius of 0.24 mn and length between 0.08 m and 4 m.

TL;DR: In this article, high-gradient electric separation (HGES) and dielectric filtration (DF) are used to separate fine-grained filamentary dielectrics.

TL;DR: In this paper, the conduction band energies (V o ) were determined in dense propane fluid over a wide range of densities by measuring the change in the work function of a Zn electrode in going from vacuum into the fluid.

TL;DR: In this article, the authors showed that silicone oils, PP films and their composed insulating systems polarized by high DC fields at high temperatures showed several TSC peaks in the temperature range from −140 to 150°C and their origins were clarified.

TL;DR: In this paper, the Paschen curve and the coefficients for the determination of the potential difference across the grounded plane and an arbitrarily charged conducting sphere in the presence/absence of an electric field are analyzed and calculated numerically.

TL;DR: In this paper, the Coulomb force hydrodynamic instabilities under conditions prevailing in current industrial applications, i.e., with liquids of very weak or non negligible conductivity subjected to A.C. fields, are considered.

TL;DR: In this article, a negatively charged test oil produced energetic positive brush discharges accompanied by surface streamers, but these discharges did not penetrate to the surface or produce surface streamer.

TL;DR: In this paper, the first results of an investigation aimed to obtain additional data on breakdown strength of liquid helium are presented; the work is performed under as controlled as possible conditions not too far from those relevant to practical engineering applications, by means of a purpose-built helium cryostat whose main features are briefly described.

TL;DR: In this article, the permittivity and loss of normal and supercooled liquid propylene carbonate have been measured in the frequency range 5 MHz to 5 mHz and the d.c. conductivity fits the usual Arrhenius expression below −75°C.

TL;DR: In this paper, broad optical absorption bands between 400 and 1000 nm were measured and from the time behaviour of the absorption and its dependence on scavengers and added solutes it was concluded that alkane radical cations were observed.

TL;DR: In this paper, the effect of the Schottky barrier on electrification was examined and it was shown that for small ions the zeta-potential can be lowered by an order of magnitude, in agreement with experiment.

TL;DR: In this paper, the influence of polar groups and manufacturing residues on the electrical behavior of silicone oil has been assessed and the best filters were Teflon membranes and breakdown varies significantly with the number, nature and dimension of particles.

TL;DR: In this article, the space charge near the electrodes and the polarization voltage P in liquid benzene have been measured by the investigation of charging and discharging currents and by means of Quittner-Beran method.

TL;DR: In liquid hydrocarbon, at short electrode distance, the negative needle indicates lower strength than that of positive needle and it reverses at longer electrode distance as discussed by the authors, and the critical distance of this polarity reversal is very short for liquids with large electron mobility like neopentane.

TL;DR: In this paper, a study of the xerographic characteristics of red HgS as pigment-resin layer, has been conducted, where various resins, namely, acrylonitrile-butadiene-styrene (ABS), polystyrene(PS), ethyl cellulose (EC), and poly(vinyl acetate) (PVAc) have been used to evaluate the comparative characteristics of REDHgS photoconductor.