Auger Photon Yields¶
When inner shell (or Auger) ionization takes place - there is a chance of photons being eected as the inner shells are re-filled. This data provies the information to compute the photons thus made. It is currently not used.
Source¶
This data comes from Kaastra and Mewe 1993, A&A, 97, 443 . The data is downloaded from the vizier site linked and put into a file called “fluorescent_yield.data”
Translation to Python format¶
The translation takes place using the python script “kaastra_2_py.py”. All identical to electron yield, but input file is “fluorescent_yield.data” and output is “kaastra_fluorescent_yield.data”
Data format¶
This is the data format of the electron yield data
| Label | z | state | n | l | photon_energy(eV) | yield |
| Kphotyield | 5 | 1 | 1 | 0 | 1.837e+02 | 6.000e-04 |
| Kphotyield | 5 | 1 | 1 | 0 | 1.690e+01 | 7.129e-01 |
| Kphotyield | 6 | 1 | 1 | 0 | 2.768e+02 | 2.600e-03 |
The data is linked to the correct inner shell photoionization cross section (and hence rate) via z, state, n shell and l subshell. The photon energy field is thew energy of the fluorescent photon in eV, and yield is the number of said photons emitted per ionization multiplied by \(10^4\).
Python structure¶
The data is stored in python in the inner_fluor_yield structure which contains
- int nion - Index to the ion which was the parent of the inner shell ionization
- int z, istate - element and ionization state of parent ion
- int n, l - Quantum numbers of shell
- double freq - the rest frequency of the photon emitted
- double yield - number of photons per ionization x \(10^4\)
Comments¶
This data is not currently used