Electrostatic fluctuations in collisional plasmas
- Univ. of Alberta, Edmonton, AB (Canada)
- Russian Academy of Sciences, Moscow (Russia)
- European XFEL, Schenefeld (Germany)
- 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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