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Silicon Atomic Data Sets

The following tables have the link to the compressed files of data sets for each ionization stage and the list of non-relativistic configuration. The numbers of fine-structure levels, collisional and radiative transitions are listed as well.

Each compressed file contains 4 files per ion stage YY (YY=1 for neutral atom) of element XX (XX=14 for silicon) :

struct.XXYY: fine-structure level and oscillator strength [GF] data
eielev.XXYY: electron-impact excitation data [CE]
ionlev.XXYY: photo-ionization [PI] and collisional-ionization [CI] data (using scaled-hydrogenic approach)
dwilev.XXYY: distorted-wave collisional ionization [DW] data from the ground level of that ion stage

Note that for ionization, a logarithmic mesh in energy is used using energy threshold units, where a "threshold unit" is the incident electron energy divided by the ionization threshold. The cross sections are given for 21 energy points, on a log mesh from 1.01 to 100 threshold units.
For excitation this is a little different. Still a log mesh, but now on the final electron energy; and also only 9 points are given. The final-energy mesh is chosen such that the initial and final values are approximately 0.01 and 9.0, respectively, times the largest transition energy to be considered for a given ion stage. This choice ensures that our method for generating the excitation cross sections is robust enough to handle the broad range of excitation transitions that can occur within a given ion stage.

IonCompressed File SizeLevelsGFCE PICIDWConfiguration File
Si 0+ Si01_LANLdata.tar.gz 37.1 Mb 1104136935103214766307663024 36 configurations
Si 1+ Si02_LANLdata.tar.gz 170.4 Mb 2003439862155953422287422287205 63 configurations
Si 2+ Si03_LANLdata.tar.gz 2.3 Mb 2839737820640844084129 33 configurations
Si 3+ Si04_LANLdata.tar.gz 6.1 Mb 25898371273160781607868 22 configurations
Si 4+ Si05_LANLdata.tar.gz 5.9 Mb 89119788164991649999 15 configurations
Si 5+ Si06_LANLdata.tar.gz 38.3 Mb 27911855831106366106366402 23 configurations
Si 6+ Si07_LANLdata.tar.gz 96.0 Mb 554418695484265244265244536 24 configurations
Si 7+ Si08_LANLdata.tar.gz 99.3 Mb 668632129900271953271953379 24 configurations
Si 8+ Si09_LANLdata.tar.gz 45.9 Mb 5644371011069123829123829169 24 configurations
Si 9+ Si10_LANLdata.tar.gz 8.1 Mb 291131854245209842098470 24 configurations
Si 10+ Si11_LANLdata.tar.gz 1.7 Mb 9814629254493449331 17 configurations
Si 11+ Si12_LANLdata.tar.gz 700.6 kb 9716582851782178219 18 configurations
Si 12+ Si13_LANLdata.tar.gz 47.6 kb 31148301241244 10 configurations
Si 13+ Si14_LANLdata.tar.gz 8.0 kb 16481516161 10 configurations