Photon kinetics in plasmas
We present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, we show that the transverse field correlation functions can be naturally dec...
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| Datum: | 2009 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2009
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/120334 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Photon kinetics in plasmas / V.G. Morozov, G. Röpke // Condensed Matter Physics. — 2009. — Т. 12, № 4. — С. 617-632. — Бібліогр.: 27 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | We present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and
nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, we
show that the transverse field correlation functions can be naturally decomposed into sharply peaked (non-
Lorentzian) parts that describe resonant (propagating) photons and off-shell parts corresponding to virtual
photons in the medium. Analogous decompositions are obtained for the longitudinal field correlation functions
and the correlation functions of relativistic electrons. We derive a kinetic equation for the resonant photons
with a finite spectral width and show that the off-shell parts of the particle and field correlation functions are
essential to calculate the local radiating power in plasmas and recover the results of vacuum QED. The plasma
effects on radiative processes are discussed. |
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