space charge
Simulation of Multipacting with Space Charge Effect
... without space charge looks good as shown in Figure 8 (except a resonance at ≈ 6 kV, which will be discussed ...without space charge effect, possibly, a big gap ...
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Influence of Nonlocality on Amplification of Space Charge Waves in n GaN Films
... due to decrease of the absolute value of the negative dif ferential conductivity. Nevertheless, to obtain the correct value of diffusion coefficient, it is necessary to use the more adequate model, based on the detailed ...
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A Protocol for Space Charge Measurements in Full-size HVDC Extruded Cables
... measured space charge or electric field [20]. However, space charge and field profiles that do not attain a steady state value at the end of the poling time, show that the insulation has a ...
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Ohmic and Space-Charge-Limited Conduction in Doped Amorphous Arsenic Triselenide
... The number of traps in the range K8T near the fermi level was found from the theory that change voltage needed to double the current i n the space charge limited region i s a good measur[r] ...
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Electric field and space charge characteristics of XLPE insulation doped with nanofillers
... J. Zha and Z. Dang [36] had investigated the effect of breakdown strength and space charge in polyimide with titanium oxide thin film. The result was showed that the breakdown strength directly proportional ...
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Contribution of the space charge on the grain boundary energy in yttria-stabilized zirconia
... A physical model is developed for determining the magnitudes of the three GB energy components in 3Y-TZP from the effect of an electric field on grain growth. Rea- sonable agreement occurred between the experimentally ...
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Space Charge Behaviour at LDPE Interface under AC Electric Stress
... of space charge, which can lead to unwanted electric field ...that space charge accumulation at the interface plays an important ...accumulated space charge at the interface ...
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Space Charge Modelling in Solid Dielectrics under High Electric Field Based on Double Charge Injection Model
... and space charge phenomena in solid dielectrics under high dc ...effect, charge carriers are injected from the electrodes, electrons from the cathode and holes from the ...
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Measurement of ionic mobilities in liquid 3He by a space charge method
... our space charge technique it seems highly desirable to extend the measurements down into the fully degenerate temperature regime, and we propose to do so at the earliest ...
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Space charge and associated electroluminescence processes in XLPE cable peelings
... Both space charge and electroluminescence (EL) mea- surements can provide significant information about the processes of space charge formation and ...for space charge formation ...
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Evaluation of the onset of space charge and electroluminescence as a marker for cross linked polyethylene ageing
... The aim of the “ARTEMIS” project is to investigate the ageing mechanisms for cross-linked polyethylene under thermo-electrical stress and to identify ageing markers, which can be used to carry out diagnostic procedures. ...
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Ageing, space charge and nanodielectrics: Ten things we don't know about dielectrics
... using space charge, has been suggested by various authors [25,38,63,64] and has been pursued particularly vigorously by Montanari et al ...of space charge becomes non-linear with ...induced ...
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"Mirror Image" space charge distribution in XLPE power cable under opposite stressing voltage polarity
... on space charge distribution under different polarities in full size cross-linked polyethylene power cables using the pulsed electro-acoustic ...voltage space charge distributions possess ...
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Space charge measurement as a diagnostic tool to monitor electrical ageing in polymeric materials
... Space charge is a term used to describe the excessive charges in ...dielectrics space charge tends to build up at discontinuities, such as at the dielectric-electrode interface, at the grain ...
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Influence of water absorption in flexible epoxy resins on the space charge behaviour
... the space charge dynamics at high electric fields. The space charge behaviour was studied using pulsed electroacoustic (PEA) ...the space charge dynamics was correlated with the ...
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CONTROLLING MECHANISMS OF SPACE-CHARGE REGION IN COMPOUND FIELD-EFFECT TRANSISTORS
... the gain factor due to the modulation of the channel resistance (due to the injection of minority hole carriers into the channel) is less than the voltage which is due to the modulation of the channel thickness by the ...
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The role of local space charge concentrations in producing branched tree structures
... Electrical trees are branched damage structures produced in polymeric insulation subject to high divergent fields. The density of branching ranges from a sparse form like a tree in winter to a dense compact form like a ...
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The decay of space charge in a glassy epoxy resin following voltage removal
... of space charge in insulators under voltage alters the field distribution from that that would apply in its ...Consequently space charge evolution can represent a potential threat to the ...
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Interfaces and Space Charge in Polymeric Insulating Materials (invited)
... insulation. Space charge formation in a material is greatly affected by the presence of impurities and additives as they can act either as ionisable centers under a high electric stress or as trapping ...
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ac aging and space charge characteristics in low density polyethylene polymeric insulation
... of charge formation and its influence on the electrical performance of polymeric insulation are of technological ...of space-charge presence under ac electric field in polymer insulation, the ...
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