Study of Electron Beam Propagation Efficiencies in Neutral Gas as a Function of Nu/Gamma PDF Download
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Author: Gerald Cooperstein
Publisher:
ISBN:
Category :
Languages : en
Pages : 89
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Book Description
The propagation efficiency of pulsed relativistic electron beams of approximately 225 keV mean electron kinetic energy with currents ranging from 30 to 88 kiloamps has been studied as a function of drift tube length (5 to 300 centimeters) and drift tube pressure (100 to 2000 m torr). All the data were taken with air as the transport medium and with no preionization and no externally applied magnetic fields. Simultaneous measurements were made of the diode voltage and current, the net beam currents at both the entrance and exit of the drift tube, and the total beam energy and primary beam current at the exit of the drift tube. A complete description of all the experimental apparatus is given. (Modified author abstract).
Author: Gerald Cooperstein
Publisher:
ISBN:
Category :
Languages : en
Pages : 89
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Book Description
The propagation efficiency of pulsed relativistic electron beams of approximately 225 keV mean electron kinetic energy with currents ranging from 30 to 88 kiloamps has been studied as a function of drift tube length (5 to 300 centimeters) and drift tube pressure (100 to 2000 m torr). All the data were taken with air as the transport medium and with no preionization and no externally applied magnetic fields. Simultaneous measurements were made of the diode voltage and current, the net beam currents at both the entrance and exit of the drift tube, and the total beam energy and primary beam current at the exit of the drift tube. A complete description of all the experimental apparatus is given. (Modified author abstract).
Author:
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Category : Nuclear energy
Languages : en
Pages : 1216
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Author: Nikita Wells
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Category : Electron beams
Languages : en
Pages : 100
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Soviet research on the propagation of intense relativistic electron beams (IREB) through fairly high-pressure air (pressure range 0.1 to 760 Torr) since the early 1970s has included the study of the plasma channel created by the passage of the electron beam through air, the resistive hose instability and its effect on beam propagation, the effect of self-fields, current enhancement, gas expansion, return currents, inherent beam energy spread, and other factors. This report covers Soviet developments in IREB propagation through air where the beam is not focused by external magnetic fields. The information was obtained from Soviet open-source publications with emphasis given to the last ten years of beam propagation in the Soviet Union. The volume of papers published on this subject in recent years indicates a significant increase in Soviet research in this area.
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Category : Government publications
Languages : en
Pages : 1074
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Author: J. R. Smith
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Category :
Languages : en
Pages : 36
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This report presents observations on propagation of a mildly relativistic electron beam (gamma = 2.4) in several different gases (air, Helium, Nitrogen, Argon) at low pressure (10-320 mTorr). At such low pressures, and with beam currents of several kiloamperes, beam induced ionization may result in self focusing of an electron beam. Beams propagating under this condition are said to be in the ion focusing regime of propagation. The injected beam has an rms radius of 0.7 cm and a transverse temperature of 35 keV. Beam transport efficiency was measured for He, N2 and Ar. A simple calculation was performed to determine the space charge neutralization fraction as a function of time. Using the results of this calculation, the charge transport efficiency is found and compared with the experimentally measured quantity. Keywords: Electron Beam; Ion Focused Regime.
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Category :
Languages : en
Pages : 1206
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Category : Aeronautics
Languages : en
Pages : 244
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ISBN:
Category : Science
Languages : en
Pages : 1220
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ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1326
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Author:
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ISBN:
Category : Plasma (Ionized gases)
Languages : en
Pages : 936
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