APEC Version 1.0.1 Released
Version 1.0.1 of the APEC plasma outputs is now released. The model
outputs, including line and continuum emissivities as a function of
temperature can be obtained here.
Please note the caveats to this release below.
- This list of caveats is in progress, and will be increasing soon.
Please check back regularly between March 20-30 to catch the changes.
- The APEC/APED database does not include radiative recombination
to neutral helium, so the continuum at temperatures around 10^4-10^5 K is
incorrect.
- The Iron L-shell ions, from Fe XVII - XXIV, is largely from
HULLAC calculations done by Duane Liedahl. These wavelengths should
be accurate to within 0.05 Angstroms. The wavelengths of strong lines from Fe
XVII-XIX have been corrected using Kelly's tables, as have lines from
Fe XXIII and Fe XXIV. Wavelengths from Fe XX, XXI, and XXII, however,
have not been changed.
- The Nickel L-shell data was extrapolated from the Fe L-shell
data, using a Z-scaling approach. However, no wavelength corrections
were done so the wavelengths may be off by 0.05 Angstroms or more.
- We have very little data on the delta n >= 1 transitions from
L-shell ions of Ne, Mg, Al, Si, S, Ar, or Ca. X-rays from these lines are
largely below 0.25 keV, and as a result, our spectral calculations
in this range are very deficient. We are working on this problem.
- Few innershell transitions are included. This primarily affects
the so-called iron K-alpha line, which is actually a large number of
lines arising from a K-shell hole in an Fe I-Fe XXIV ion. We are
working to get this data but have not yet included it.
Last modified on June 4, 2002