skip to main content

Title: Generation of low-frequency nonlinear currents in plasma by an ultrashort pulse of high-frequency radiation

A kinetic theory of low-frequency currents induced in plasma by an ultrashort high-frequency radiation pulse is developed. General expressions for the currents flowing along the propagation direction of the pulse and along the gradient of the field energy density are analyzed both analytically and numerically for pulse durations longer or shorter than or comparable with the electron collision time in plasma. It is demonstrated that the nonlinear current flowing along the gradient of the field energy density can be described correctly only when the modification of the isotropic part of the electron distribution function is taken into account.
Authors:
;  [1]
  1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22472248
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 7; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPARATIVE EVALUATIONS; DISTRIBUTION FUNCTIONS; ELECTRIC CURRENTS; ELECTROMAGNETIC PULSES; ELECTRON COLLISIONS; ELECTRONS; ENERGY DENSITY; NONLINEAR PROBLEMS; PLASMA; SHORT WAVE RADIATION