By Topic

The role of the Ridley-Watkins-Hilsum effect in stabilization of millimeter and sub-millimeter surface electromagnetic waves excited by an electron beam moving parallel to the surface of GaAs

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Averkov, Y.O. ; Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine

The plasma-beam instabilities have attracted the close attention since 1949 when these instabilities were discovered by Akhiezer, Fainberg and Bohm, Gross. This is due to the possibilities of practical applications of these effects. For instance, the plasma-beam instabilities can be used for the turbulence heating of nuclear plasma, particle acceleration, amplification of high frequency oscillations etc. Nowadays great attention is paid to interactions of electron beams with solid-state plasmas. The solid-state plasma in comparison with the gas-discharge plasma exhibits a whole number of new effects conditioned by peculiarities of energy spectrum of charges, scattering mechanisms and so forth. In the present paper the stabilization of the surface electromagnetic wave excited by an electron beam moving parallel to a semiconductor (GaAs) boundary is considered within the framework of hydrodynamic approach. The stabilization occurs due to peculiarities of band structures of AIIIBV semiconductors (and GaAs in particular). The electrons of the semiconductor in the unexcited condition are known to be in the center of the Brillouin zone (in the direction of <000>). When the magnitude of the external electric field is greater than the energy gap between the center of the Brillouin zone and the valleys in the directions <100> the transitions of electrons between these valleys occurs (the Ridley-Watkins-Hilsum effect). The momentum frequency of these transitions increases with increasing magnitude of the external electric -field. The last one is the cause of stabilization of instabilities of the surface electromagnetic wave and the oscillations of the surface electron densities of both an electron beam and the semiconductor

Published in:

Physics and Engineering of Millimeter and Sub-Millimeter Waves, 2001. The Fourth International Kharkov Symposium on  (Volume:1 )

Date of Conference:

2001