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Electrostatic fluctuations in collisional plasmas

Journal Article · · Physical Review E
 [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)

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).

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI ID:
1407424
Alternate ID(s):
OSTI ID: 1399164
Journal Information:
Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 96; ISSN PLEEE8; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Multi-angle multi-pulse time-resolved Thomson scattering on laboratory plasma jets journal October 2018
Two-colour interferometry and Thomson scattering measurements of a plasma gun journal June 2019
Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering journal October 2019
Theory of Thomson scattering in inhomogeneous plasmas journal May 2018

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