Physics

X-ray Spectroscopy (47 pages)
Ionization and energy balance in collisionally and photo-ionized plasmas (16 pages)
Continuum radiation processes (17 pages)
Line excitation processes (22 pages)
- Appendix a: List of input line parameters lines (3 pages)
- Appendix b: Atlas of dielectronic recombination lines (16 pages)
- Appendix c: Atlas of innershell ionization lines (9 pages)
Differential Emission Measure Analysis (7 pages)

Spectral line lists

For convenience of users, a list of spectral lines with intensities has been produced. This list may serve primarily as a quick guide to identify lines in an observed spectrum and to recognize the most important lines at a given temperature. This list should not be used to produces specific emissivity codes, nor should it be used in systematic spectral analyses. Remember that in practical cases there is also continuum emission, abundances may differ, there may be multi-temperature structure, density effects, deviations from collisional ionization equilibrium, etc. With these caveats the following list is given.

The original line list (given here only for comparison reasons for those who have used it before) was calculated many years ago and has for some lines less accuracy at particular temperatures. The new line list (recommended to be used) is given here and described shortly below: new line list. The new list of lines is calculated with the following restrictions/conditions:

Collision ionization equilibrium, zero density limit
Ionization balance Arnaud & Raymond (1992) for Fe, Arnaud & Rothenflug (1985) for the others; charge transfer reactions: Arnaud & Rothenflug
Abundances: Lodders (2003). We adopted the proto-solar values (in general more accurate than the photospheric values, but in most cases consistent), except for He (slightly enhanced in the solar photosphere due to element migration at the bottom of the convection zone).
unresolved dielectronic satellites are merged into the main line (the old list had them separately)
temperature grid logarithmic with steps of 0.2 from 10⁴ to 10⁹ K
logarithmic emissivities are given as follows. Listed for each line is -log(Q) where
Q=P/(n_e n_H), with P the power per unit volume, and Q is in units of 10^-36 W m³ (10^-23 erg cm³/s) the temperature T_max of maximum emissivity as well as -log(Q_max) is also given.