dere07#he.dat

• He⁰(1s2 ¹S) + e → He⁺(1s1 ²S) + e + e
• He⁺(1s1 ²S) + e → He²⁺ + e + e

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  ELECTRON IMPACT IONISATION RATE COEFFICIENT LIST:

   ISEL  INITIAL MET.    FINAL  MET.           SOURCE
           ION   CODE     ION   CODE
   ----  ------- ----   ------- ----     ---------------------------
     1   He+ 0    1     He+ 1    1       *DERE (2007)
     2   He+ 1    1     He+ 2    1       *DERE (2007)


         PREFERRED DATA INDICATED BY *

  NOTES.
 ------

   ISEL  INITIAL MET.    DESIG.             FINAL  MET.    DESIG.
           ION   CODE                        ION   CODE
   ----  ------- ---- ---------------      ------- ---- ---------------
     1   He+ 0    1   1s2         (1S)      He+ 1    1  1s1         (2S)
     2   He+ 1    1   1s1         (2S)      He+ 2    1  * (1S)


  Data from K P Dere, Astron. Astrophys., 466 (2007), p771
  DOI : 10.1051/0004-6361:20066728

  Compiler:  A. Giunta
  Date:      16 December 2009

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Contributors

• K P Dere
• Alessandra Giunta