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Collisionless Absorption of Electromagnetic Waves in Plasmas and “Slow” Nonlinear Phenomena

  • V. I. Barinov
  • I. R. Gekker
  • V. A. Ivanov
  • D. M. Karfidov
Part of the The Lebedev Physics Institute Series book series (LPIS, volume 92)

Abstract

An experimental study is made of the interaction of pulsed microwaves in the 10 cm range with collisionless plasma flows (ω ≫ ν) in a waveguide under both favorable (▽n ‖ E, ωωLe) unfavorable initial conditions for plasma resonance of the waves. It is shown that in the first case over the interval vE/vTe = 10-5-5 the absorption coefficient D2 changes little while absorption sets in almost immediately (t < 0.01 µsec) and is accompanied by rapid decay of the plasma and the production of fast electrons. In the second case (▽n ⊥ E) anomalously strong absorption sets in after a time delay (tdelay = 1-3 µsec) related to the time for the leading edge of the plasma to become deformed when the wave pressure exceeds the plasma pressure (E 0 2 /8π ≳ neTe).

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Copyright information

© Consultants Bureau, New York 1982

Authors and Affiliations

  • V. I. Barinov
  • I. R. Gekker
  • V. A. Ivanov
  • D. M. Karfidov

There are no affiliations available

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