Classical Electron-Ion Coulomb Bremsstrahlung in Weakly Coupled Plasmas

Details Classical Electron-Ion Coulomb Bremsstrahlung in Weakly Coupled Plasmas Classical Electron-Ion Coulomb Bremsstrahlung in Weakly Coupled Plasmas

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...479..912j&link_type=abstract

Astrophysical Journal v.479, p.912

Astronomy and Astrophysics

Astronomy

9

Plasmas, Radiation Mechanisms: Nonthermal

Scientific paper

In weakly coupled plasmas the classical electron-ion Coulomb bremsstrahlung process are investigated. The cross section for the electron-ion Coulomb bremsstrahlung in weakly-coupled plasmas is obtained by the Debye-Huckel model with the modified hyperbolic-orbit trajectory method. The results show that the plasma-screening effects on the scaled doubly differential bremsstrahlung radiation (SDDBR) cross section increase as the radiation frequency increases. For a given projectile electron energy, the SDDBR cross section obtained by the modified hyperbolic-orbit trajectory method and by the straight-line trajectory method tend to the same value with increasing radiation photon energy. The SDDBR cross sections using the modified hyperbolic-orbit trajectory method are increased by the plasma screening in the small impact parameter domain and decreased for large and intermediate impact parameters with increasing radiation frequency.

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