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Showing 1 to 20 of 155 for “"Space charge."”.
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Thermionic Space Charge Oscillations
… flow in the emitter and the cathode-accelerator space. A conclusion drawn from the model is that conventional calculations of the emitted current density should be modified to account for the shift in energy levels of the electrons in the emitter as a result of the surface-directed electron drift.
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Space charge dynamics of liquids.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1970. Sc.D.
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Ion Bunching in Electronic Space Charge Regions
Made available in DSpace on 2014-12-12T20:54:28Z (GMT). No. of bitstreams: 1 7709041.pdf: 1693951 bytes, checksum: 00ac58a31a6bb4dea57c5927d3ae85fc (MD5) Previous issue date: 1976
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Determination of space charge characteristics on contaminated XLPE insulator
… on it. However, effect of mineral layer on space charge on underground XLPE insulator remain unanswered. These minerals Silicone Dioxide, Titanium Dioxide and Aluminium Oxide exist due to its content in underground soil. The purpose of this study is to determine space charge effects towards …
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TRANSVERSE CHARACTERIZATION AND CONTROL OF BEAMS WITH SPACE CHARGE
The characterization of the transverse phase space of beams is a fundamental requirement for particle accelerators. As accelerators shift toward higher intensity beam regimes, the transverse dynamics of beams becomes more influenced by interparticle forces known as the space charge forces. …
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Space charge measurement and analysis in low density polyethylene films
… field. It is well known that the presence of space charge is one of the important factors causing premature failure of polymeric high voltage cables. Space charge surveillance is becoming the most general applied skill to evaluate polymeric materials, particularly high voltage cables. The …
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Space Charge Reduction in an Ehd Generator via Fluidic Switching
Made available in DSpace on 2014-12-13T19:55:32Z (GMT). No. of bitstreams: 1 8009000.pdf: 3431933 bytes, checksum: 6847f02737ca4b0d23b4daa430b2af43 (MD5) Previous issue date: 1979
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Ion Extraction Using Electronic Space Charge Fields--a Theoretical Analysis
Made available in DSpace on 2014-12-12T20:54:51Z (GMT). No. of bitstreams: 1 7821239.pdf: 1982991 bytes, checksum: a7dfc5e053b5eb81f842fd7953f6d4ad (MD5) Previous issue date: 1978
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Space charge resulting from imperfections and effects thereof in ionic crystals
… potential fields~ resulting from imperfection space charge~ modi,fy the innate free formation energies of the defects in a manJ:!ier such that bulk electrical neutrality exists at sufficiently high temperatures. At low temperatures it is shown that bulk electrical neutrality does not exist and …
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Electric field and space charge characteristics of xlpe insulation doped with nanofillers
… also influenced by the accumulation amount of space charge. So, this study was conducted to evaluate the electric field and space charge distribution in within nanocomposite insulator. The primary purpose is to identify the finest size in each type of selected nanoparticles in optimising the …
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Voltage and Power Relations in the Space Charge Limited Parallel Plane Diode
Made available in DSpace on 2014-12-04T21:02:29Z (GMT). No. of bitstreams: 1 0002729.pdf: 1907590 bytes, checksum: 046379a158f0d9fd641ed423d9bbea22 (MD5) Previous issue date: 1951
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Space-charge dynamics and neutron generation in an inertial-electrostatic confinement device
Inertial-Electrostatic Confinement (IEC) is an alternative approach to fusion power that offers the ability to burn advanced fuels like D-He$\sp3$ in a non-Maxwellian, high density core. These aneutronic reactions are ideal for direct energy conversion.
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Modification of space charge transport in nanocrystalline cerium oxide by heterogeneous doping
… electrical conductivity with the properties of space charge layers within the material. In this thesis, efforts designed to intentionally modify the space charge potential, and thus the space charge profiles and the macroscopic conductivity, are described.Nanocrystalline CeO2 thin films with a …
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Space-Charge Saturation and Current Limits in Cylindrical Drift Tubes and Planar Sheaths
Space-charge effects play a dominant role in many areas of physics. In high-power microwave devices using high-current, relativistic electron beams, it places a limit on the amount of radiation a device can produce. Because the beam's space-charge can actually reflect a portion of the beam, the …
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Quadrupole Strong Focusing for Space-Charge Dominated Electron Beams in Traveling-Wave Tubes
Analysis of quadrupole focusing lattices for high-frequency TWTs is presented. This work is motivated by recent work performed at the Naval Research Laboratory (NRL) which demonstrated an advantageous case for strong focusing employing a Halbach quadrupole lattice. Using realistic Permanent Magnet …
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Space charge determination in HVDC power cable and its influence on electric field
… as the accumulation of comprehensive immobile charges in the XLPE, this superimposes to the Laplacian field resulting the changes of electric stress across the dielectric material. Additionally, in most HVDC transmission systems both the presence of temperature gradient across its insulation …
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Stochastic Space-Charge in Projection Electron Lithography and High Resolution Transmission Electron Microscopy
The effects of space-charge have been investigated for the past half-century; the longevity of this research stems from the difficulty of the problem and from the technological advances which have availed new opportunities in which to study the phenomena. This thesis investigates a specific effect, …
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Drift Mobilities of Electrons and Holes and Space-Charge-Limited Currentsin Amorphous Selenium Films
Made available in DSpace on 2015-05-12T17:12:25Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6200618.PDF: 3668461 bytes, checksum: a69e313dc1581fa54971476212ac9d09 (MD5) Previous issue date: 1961
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