TITLE

Electron-beam generation in a wide-aperture open gas discharge: A comparative study for different inert gases

AUTHOR(S)
Bokhan, P. A.; Zakrevsky, Dm. E.
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/30/2010, Vol. 97 Issue 9, p091502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the present study, electron-beam generation by open discharges was examined. The study was performed at gas pressures up to 20 Torr, and covered all inert gases. At voltages up to 8 kV, electron-beam currents up to 1600 A with current density ∼130 A/cm2 and a beam generation efficiency in excess of 93% were obtained. The production of electrons from cold cathode was concluded to be of photoemissive nature, enabling the production of high-intensity electron beams in any noble gas or in a mixture of a noble gas with molecular gases irrespective of cathode material.
ACCESSION #
53421661

 

Related Articles

  • Emission properties of a plasma cathode based on a glow discharge for generating nanosecond electron beams. Gushenets, V. I.; Koval�, N. N.; Tolkachev, V. S.; Shchanin, P. M. // Technical Physics;Nov99, Vol. 44 Issue 11, p1318 

    The emission properties of a plasma cathode based on a nanosecond pulsed glow discharge with currents of up to 200 A at a pressure of 5 � 10[sup -2] Pa are studied experimentally. Stable ignition and burning of the discharge are ensured if the current in the auxiliary pulsed discharge is...

  • Highly efficient electron beam generation in a wide-aperture discharge in helium. Belskaya, E. V.; Bokhan, P. A.; Zakrevsky, Dm. E. // Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p091503 

    The paper deals with a gas discharge having electron beam generation efficiency η≃100% at a voltage U>300 V. The discharge has been realized in helium in a cell with a cathode diameter of 19.5 cm. The discharge features are a higher η as compared to other discharges, the presence of...

  • Generation of intense excimer radiation from high-pressure hollow cathode discharges. El-Habachi, Ahmed; Schoenbach, Karl H. // Applied Physics Letters;8/17/1998, Vol. 73 Issue 7 

    By reducing the diameter of the cathode opening in a hollow cathode discharge geometry to values on the order of 100 μm, we were able to operate these discharges in noble gases in a direct current mode up to atmospheric pressure. High-pressure discharges in xenon were found to be strong...

  • High current density hollow cathode electron beam source. Rocca, J. J.; Szapiro, B.; Verhey, T. // Applied Physics Letters;5/11/1987, Vol. 50 Issue 19, p1334 

    An electron beam with current density greater than 30 A/cm2 and total current of 92 A has been generated in 5 μs pulses by accelerating the electrons from a glow discharge in a narrow gap between two grids. The ratio of the extracted electron beam current to discharge current is approximately...

  • Stabilization of a cold cathode electron beam glow discharge for surface treatment. Mingolo, N.; González, C.R.; Martínez, O. E.; Rocca, J. J. // Journal of Applied Physics;10/15/1997, Vol. 82 Issue 8, p4118 

    Demonstrates the reproducibility of electron beam pulses generated by a high power, cold cathode glow discharge by adding a small continuous keep-alive discharge current. Description of the cold cathode electron gun used in the electron; Improvement in the keep-alive current; Measurement of the...

  • Effects of dust charging associated with an electron beam in the cathode sheath of glow discharges. Wang, De-Zhen; Liu, Jin-Yuan; Ma, Teng-Cai // Physics of Plasmas;Mar2000, Vol. 7 Issue 3 

    The charging of dust particles caused by the thermal electrons, the cold ions, and the electron beam released from a plane cathode, including secondary emission of dust in a collisionless cathode sheath of glow discharges, is investigated with a self-consistent theoretical model. Effects of the...

  • Negative differential conductivity of electrons in electron-beam sustained discharge... Kochetov, I.V.; Napartovich, A.P.; Ye, C.; Lo, D. // Journal of Applied Physics;8/15/1998, Vol. 84 Issue 4, p1863 

    Focuses on a study conduted using simplified kinetic models to investigate the mechanism of negative differential conductivity (NDC) in an electron-beam sustained gas discharge of pure xenon (Xe). Calculation of the drift velocity of electrons in Xe; What model calculations involves; Definition...

  • Electric field distribution in the cathode sheath of an electron beam glow discharge. Lee, S. A.; Andersen, L.-U. A.; Rocca, J. J.; Marconi, M.; Reesor, N. D. // Applied Physics Letters;8/10/1987, Vol. 51 Issue 6, p409 

    We have measured the electric field distribution in the cathode sheath of an electron beam He glow discharge. Laser saturation spectroscopy was used to determine the quadratic Stark shift produced by the electric field. The experimental results are in good agreement with the calculations of a...

  • Intense superminiature beamless generators in gas-discharge microwave electronics. Selemir, V.; Dubinov, A.; Zhdanov, V.; Sadovoi, S.; L'vov, I.; Vyalykh, D. // Doklady Physics;Feb2012, Vol. 57 Issue 2, p57 

    The article presents a study which investigates the condition of intense superminiature beamless generators placed in gas-discharge microwave electronics. The study examines gas-discharge chambers involving cathode cavity of the cylindrical shape with a conducting edge wall on its side which...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics