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Title: Electrostatic fluctuations in collisional plasmas

Abstract

Here, we present a theory of electrostatic fluctuations in two-component plasmas where electrons and ions are described by Maxwellian distribution functions at unequal temperatures. Based on the exact solution of the Landau kinetic equation, that includes electron-electron, electron-ion, and ion-ion collision integrals, the dynamic form factor, S( k,ω), is derived for weakly coupled plasmas. The collective plasma responses at ion-acoustic, Langmuir, and entropy mode resonances are described for arbitrary wave numbers and frequencies in the entire range of plasma collisionality. The collisionless limit of S( k,ω) and the strong-collision result based on the fluctuation-dissipation theorem and classical transport at T e = T i are recovered and discussed. Results of several Thomson scattering experiments in the broad range of plasma parameters are described and discussed by means of our theory for S( k,ω).

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of Alberta, Edmonton, AB (Canada)
  2. Russian Academy of Sciences, Moscow (Russia)
  3. European XFEL, Schenefeld (Germany)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1407424
Grant/Contract Number:
16-02-00088a; 654220; 100182
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 96; Journal Issue: 4; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Rozmus, W., Brantov, A., Fortmann-Grote, C., Bychenkov, V. Yu., and Glenzer, S.. Electrostatic fluctuations in collisional plasmas. United States: N. p., 2017. Web. doi:10.1103/PhysRevE.96.043207.
Rozmus, W., Brantov, A., Fortmann-Grote, C., Bychenkov, V. Yu., & Glenzer, S.. Electrostatic fluctuations in collisional plasmas. United States. doi:10.1103/PhysRevE.96.043207.
Rozmus, W., Brantov, A., Fortmann-Grote, C., Bychenkov, V. Yu., and Glenzer, S.. 2017. "Electrostatic fluctuations in collisional plasmas". United States. doi:10.1103/PhysRevE.96.043207.
@article{osti_1407424,
title = {Electrostatic fluctuations in collisional plasmas},
author = {Rozmus, W. and Brantov, A. and Fortmann-Grote, C. and Bychenkov, V. Yu. and Glenzer, S.},
abstractNote = {Here, we present a theory of electrostatic fluctuations in two-component plasmas where electrons and ions are described by Maxwellian distribution functions at unequal temperatures. Based on the exact solution of the Landau kinetic equation, that includes electron-electron, electron-ion, and ion-ion collision integrals, the dynamic form factor, S(→k,ω), is derived for weakly coupled plasmas. The collective plasma responses at ion-acoustic, Langmuir, and entropy mode resonances are described for arbitrary wave numbers and frequencies in the entire range of plasma collisionality. The collisionless limit of S(→k,ω) and the strong-collision result based on the fluctuation-dissipation theorem and classical transport at Te = Ti are recovered and discussed. Results of several Thomson scattering experiments in the broad range of plasma parameters are described and discussed by means of our theory for S(→k,ω).},
doi = {10.1103/PhysRevE.96.043207},
journal = {Physical Review E},
number = 4,
volume = 96,
place = {United States},
year = 2017,
month =
}

Journal Article:
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