szd03#be_be.dat

Electron Impact Ionisation Coefficients

Ion
Be
Temperature Range
0.086 eV → 1.600 x 104 eV

ADF07

Filename
szd03#be_be.dat
Full Path
adf07/szd03#be/szd03#be_be.dat
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  • Be0(1s2 2s2 1S) + e → Be+(1s2 2s1 2S) + e + e
  • Be0(1s2 2s2p 3P) + e → Be+(1s2 2s1 2S) + e + e
  • Be0(1s2 2s2p 3P) + e → Be+(1s2 2p1 2P) + e + e
  • Be+(1s2 2s1 2S) + e → Be2+(1s2 1S) + e + e
  • Be+(1s2 2s1 2S) + e → Be2+(1s1 2s1 3S) + e + e
  • Be+(1s2 2p1 2P) + e → Be2+(1s2 1S) + e + e
  • Be2+(1s2 1S) + e → Be3+(1s1 2S) + e + e
  • Be2+(1s1 2s1 3S) + e → Be3+(1s1 2S) + e + e
  • Be2+(1s1 2s1 3S) + e → Be3+(1s0 2s1 2S) + e + e
  • Be3+(1s1 2S) + e → Be4+ + e + e
  • Be3+(2s1 2S) + e → Be4+ + e + e
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  Data generated by Stuart Loch         on 31/01/06


  NOTES.
  ______

   ISEL  INITIAL MET.        DESIG.             FINAL  MET.      DESIG.
           ION   CODE                            ION   CODE
   ____  _______ ____ ___________________      _______ ____ _______________
     1   BE+ 0    1       1s2 2s2(1S)           BE+ 1    1     1s2 2s1(2S)
     2   BE+ 0    2       1s2 2s2p(3P)          BE+ 1    1     1s2 2s1(2S)
     3   BE+ 0    2       1s2 2s2p(3P)          BE+ 1    2     1s2 2p1(2P)
     4   BE+ 1    1       1s2 2s1(2S)           BE+ 2    1     1s2(1S)
     5   BE+ 1    1       1s2 2s1(2S)           BE+ 2    2     1s1 2s1(3S)
     6   BE+ 1    1       1s2 2p1(2P)           BE+ 2    1     1s2(1S)
     7   BE+ 2    1       1s2(1S)               BE+ 3    1     1s1(2S)
     8   BE+ 2    1       1s1 2s1(3S)           BE+ 3    1     1s1(2S)
     9   BE+ 2    2       1s1 2s1(3S)           BE+ 3    2     1s0 2s1(2S)
    10   BE+ 3    1       1s1(2S)               BE+ 4    1     1s0
    11   BE+ 3    2       2s1(2S)               BE+ 4    1     1s0


 All of the data is taken from Colgan et al.
 PRA 68,032712 (2003) for more details, which
 contains RMPS, TDCC and CCC cross sections.  In all 
 cases a Rost fit was done to the fundamental cross
 section results.

 For Be0+ the rates were calculated using the
 RMPS calculations for the 1s2 2s2 -> 1s2 2s
 transition, and using the TDCC calculation for 
 ionization from the 1s2 2s2p ^3P term (both 2s and 2p ionization).  
 For Be1+ the rates were calculated using the RMPS ionization
 cross sections for the 1s2 2s1 configuration, and using the
 TDCC ionization cross for the 1s2 2p1 configuration.
 For Be2+ the rates were calculated using the TDCC calculations.  
 For Be3+, the rates were calculated using the RMPS calculations.   

 The inner shell 1s2 2s1(2S) -> 1s1 2s1(3S) and 
 1s1 2s1(3S)->1s0 2s1(2S) processes were calculated
 using configuration-average ionization cross
 sections, with semi-relativistic wavefunctions, using the
 relaxed-core approximation, the post form  for the scattering
 potentials, and the natural-phase approximation.       
 This was then multiplied by the appropriate angular coefficients.

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