skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electrostatic-Wave Behavior in Pair Fullerene-Ion Plasma

Abstract

Three kinds of electrostatic modes are experimentally observed to propagate along magnetic-field lines in a pair-ion plasma consisting of only positive and negative fullerene ions with an equal mass. It is found that the phase lag between the density fluctuations of positive and negative ions is fixed at 0 and {pi} for ion acoustic and ion plasma waves, respectively. In addition, a backward-like new mode appears in an intermediate-frequency band between the frequency ranges of the two waves, the phase lag of which strongly depends on the frequency.

Authors:
; ;  [1]
  1. Department of Electronic Engineering, Tohoku University (Japan)
Publication Date:
OSTI Identifier:
20726773
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 799; Journal Issue: 1; Conference: 4. international conference on the physics of dusty plasmas, Orleans (France), 13-17 Jun 2005; Other Information: DOI: 10.1063/1.2134570; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANIONS; CATIONS; DENSITY; FLUCTUATIONS; FULLERENES; ION PLASMA WAVES; MAGNETIC FIELDS; PLASMA

Citation Formats

Oohara, W., Kuwabara, Y., and Hatakeyama, R. Electrostatic-Wave Behavior in Pair Fullerene-Ion Plasma. United States: N. p., 2005. Web. doi:10.1063/1.2134570.
Oohara, W., Kuwabara, Y., & Hatakeyama, R. Electrostatic-Wave Behavior in Pair Fullerene-Ion Plasma. United States. doi:10.1063/1.2134570.
Oohara, W., Kuwabara, Y., and Hatakeyama, R. Mon . "Electrostatic-Wave Behavior in Pair Fullerene-Ion Plasma". United States. doi:10.1063/1.2134570.
@article{osti_20726773,
title = {Electrostatic-Wave Behavior in Pair Fullerene-Ion Plasma},
author = {Oohara, W. and Kuwabara, Y. and Hatakeyama, R.},
abstractNote = {Three kinds of electrostatic modes are experimentally observed to propagate along magnetic-field lines in a pair-ion plasma consisting of only positive and negative fullerene ions with an equal mass. It is found that the phase lag between the density fluctuations of positive and negative ions is fixed at 0 and {pi} for ion acoustic and ion plasma waves, respectively. In addition, a backward-like new mode appears in an intermediate-frequency band between the frequency ranges of the two waves, the phase lag of which strongly depends on the frequency.},
doi = {10.1063/1.2134570},
journal = {AIP Conference Proceedings},
number = 1,
volume = 799,
place = {United States},
year = {Mon Oct 31 00:00:00 EST 2005},
month = {Mon Oct 31 00:00:00 EST 2005}
}
  • Three-dimensional nonlinear evolution equations of an electrostatic ion wave in the short wave region in a magnetized plasma are derived by means of the reductive perturbation method. It is shown that, in some cases, the evolution equations reduce to the Davey--Stewartson 1 equations, which are known to admit solutions with localized structure in higher dimension. It is also shown that there is a possibility of collapse of localized structure in the case of wave propagation parallel to a magnetic field.
  • Three kinds of electrostatic modes are experimentally observed to propagate along magnetic-field lines for the first time in the pair-ion plasma consisting of only positive and negative fullerene ions with an equal mass. It is found that the phase lag between the density fluctuations of positive and negative ions varies from 0 to {pi} depending on the frequency for ion acoustic wave and is fixed at {pi} for an ion plasma wave. In addition, a new mode with the phase lag about {pi} appears in an intermediate-frequency band between the frequency ranges of the acoustic and plasma waves.
  • No abstract prepared.
  • Effects of superthermal electron on the features of nonlinear acoustic waves in unmagnetized collisionless ion pair plasma with superthermal electrons have been examined. The system equations are reduced in the form of the nonlinear Schrodinger equation. The rogue wave characteristics dependences on the ionic density ratio (ν = n{sub –0}/n{sub +0}), ionic mass ratio (Q = m{sub +}/m{sub −}), and superthermality index (κ) are investigated. It is worth mentioning that the results present in this work could be applicable in the Earth's ionosphere plasmas.
  • Nonlinear propagation of magnetosonic shock wave has been studied in collisional magnetized pair-ion plasma. The masses of both ions are same but the temperatures are slightly different. Two fluid model has been taken to describe the model. Two different modes of the magnetosonic wave have been obtained. The dynamics of the nonlinear magnetosonic wave is governed by the Korteweg-de Vries Burgers' equation. It has been shown that the ion-ion collision is the source of dissipation that causes the Burgers' term which is responsible for the shock structures in equal mass pair-ion plasma. The numerical investigations reveal that the magnetosonic wavemore » exhibits both oscillatory and monotonic shock structures depending on the strength of the dissipation. The nonlinear wave exhibited the oscillatory shock wave for strong magnetic field (weak dissipation) and monotonic shock wave for weak magnetic field (strong dissipation). The results have been discussed in the context of the fullerene pair-ion plasma experiments.« less