![\begin{figure}
\par\includegraphics[angle=-90,width=8cm,clip]{6245fig3.eps}
\end{figure}](/articles/aa/full/2007/02/aa6245-06/Timg79.gif) |
Figure 3:
Electron-proton Bremsstrahlung emissivity of a optically
thin gas for different electron temperatures at a proton
temperature of
K. For electron temperatures lower than
K the contributions of the
protons dominate (then the electron-proton bremsstrahlung rate is
essentially independent of the electron temperature),
while for larger electron temperatures the
classical result is reproduced. The long-dashed lines indicate the
limiting cases calculated in Eqs. (14) and (15), respectively, while the short-dashed line gives
the electron-electron Bremsstrahlung rate of
Svensson (1982). Note that for electron temperatures
in excess of approx.
K the electrons are
relativistic and the plotted bremsstrahlung rate may be a very
crude approximation in this regime. |