Resolved Specific Ion Data Collections

Temperature Range
1.000 eV → 200 eV


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  • Spontaneous Emission: He+0(i) → He+0(j) + hv
  • Electron Impact Excitation: He+0(i) + e → He+0(j) + e
  • Free Electron Recombination: He+1(i) + e → He+0(j)
1s1s 1S0.0 0.0 cm-1
1s2s 3S1.0 159850.0 cm-1
1s2s 1S0.0 166271.0 cm-1
1s2p 3P4.0 169082.0 cm-1
1s2p 1P1.0 171129.0 cm-1
1s3s 3S1.0 183231.0 cm-1
1s3s 1S0.0 184859.0 cm-1
1s3p 3P4.0 185559.0 cm-1
1s3d 3D7.0 186096.0 cm-1
1s3d 1D2.0 186099.0 cm-1
1s3p 1P1.0 186203.0 cm-1
1s4s 3S1.0 190292.0 cm-1
1s4s 1S0.0 190935.0 cm-1
1s4p 3P4.0 191211.0 cm-1
1s4d 3D7.0 191439.0 cm-1
1s4d 1D2.0 191441.0 cm-1
1s4f 3F10.0 191447.0 cm-1
1s4f 1F3.0 191447.0 cm-1
1s4p 1P1.0 191487.0 cm-1
  A-values are taken from Wiese, Smith & Glennon  NBS-NSRDS                    
  Dipole & non-dipole transitions from the 1(1)S follow                        
     (i)   preferred curves from comparative graphs up to the n=4 shell        
           strongly influenced by experiments of                               
           Westerfeld  (1979) J. Phys. B. 12,115                               
           Van Zyl et al.(1980) Phys. Rev. A22, 1916                           
           Heddle & Gallagher (1989) Rev.Mod.Phys. 61, 221,                    
           Born limits and to a lesser extent by                               
           Fujimoto (1978) IPPJ-AM-9.                                          
           Unpublished 29 state R-matrix calculations of Berrington et         
           al. (1990) have been used in association with Heddle &              
           Gallagher to correct the low temp values up to 10eV of              
           1(1)S - 3(1)D, 1(1)S - 3(1)P                                        
  Dipole & non-dipole transitions from the 2(1)S & 2(3)S states follow         
     (i)   Fujimoto (1978) IPPJ-AM-8. Non-dipole Born limits from              
           Flannery, Morrision & Richmond (1975) J.Appl.Phys. 46, 1186         
  Dipole transitions within the n=3,4 shells                                   
     (i)   Impact parameter approximation                                      
  Spin change data follow                                                      
     (i)   Kato (1989) At. Data & Nucl. Data Tables 42,313  for                
           transitions 1(1)S - 2(3)S and 1(1)S - 2(3)P                         
     (ii)  Berrington et al. (1985) J. Phys. B. 18, 4147 for                   
           transitions 2(3)S - 2(1)S,  2(3)S - 2(1)P,                          
           2(1)S - 2(3)P & 2(3)P - 2(1)P at low temperature and                
           follows a similar decay to high temperature as the Kato data        
     (iii) For 1(1)S - 3(3)L , the data of Berrington et al.                   
           is used for low temperature and then the shape of the               
           Kato curves above 5eV scaled to match Berrington at 5eV.            
     (iv)  For 1(1)S - 4(3)L , 1/n**3 scaling is used from the n=3             
                                                H.P. Summers, Mar. 1991        
  Dipole transitions between 2(1)P - n=3,4 and 2(3)P - n=3,4 added.            
      (i)  Impact parameter approximation                                      
                                                H.P. Summers, Jan. 1992        
  A complete revision of excitations from 1(1)S and 2(3)S, 2(1)S has           
  taken place in association with FOM-KVI (R. Hoekstra, F de Heer,             
  H-F Folkerts) making use also of recent Belfast R-matrix data.  The          
  new data has replace the older data above where there is ovelap.             
  The new preferred cross-section data is archived as                          
             JETSHP.KVI.DATA(EXC#HE0A) - excitation from 1(1)S                 
             JETSHP.KVI.DATA(EXC#HE0B) - excitation from 2(1)S, 2(3)S          
  The rate parameters are produced in ADF04 format by the codes                
             JETSHP.COPASE.FORT(NEUTQUAD)  and                                 
             JETSHP.COPASE.FORT(NEUTQD2)   respectively.                       
                                                H.P. Summers, June 1993        
  Attention has been drawn to errors in some A-values in the dataset by        
  Mathias Brix.   The corrections are as follow:                               
              15-14 trans.  A-value  4.15E-05 -> 4.15E+03                      
              17-15 trans.  A-value  8.15E-10 -> 8.15E-02                      
              19-13 trans.  A-value  5.79E-04 -> 5.79E+04                      
              19-16 trans.  A-value  5.70E-07 -> 5.70E+01                      
              18-16 trans.  A-value  3.63E-10 -> 3.63E-02                      
  The errors occurred in transcription from the Wiess, Smith, Glennon          
  tables by Summers.  These very small A-values have no impact on              
  neutral helium population calculations.  The following change has            
                9- 4 trans.  A-value  7.08E+07 -> 7.06E+07                     
  has also been made matching the NIST-DAS tabulation.                         
                                             H.P. Summers, 29 Jan. 1997        
  A further revision of excitations from  2(3)S and 2(1)S has                  
  taken place in association with FOM-KVI (R. Hoekstra, F de Heer,             
  F. Bliek) making use of converged close coupling calculations.  The          
  new data has replace the older data above where there is overlap.            
  The new preferred cross-section data are archived as                         
  The rate parameters are produced in ADF04 format by the code                 
                                             H.P. Summers, 3 Feb. 1997         

  An error in the 4(1F) and 4(3F) transitions from the 2(1S) and 2(3S)
  metastables has been detected by Mathias Brix.  The 4(1F) and 4(3F)
  transition indices have been interchanged.  The transitions affected 
  are 17-2, 18-2, 17-3 and 18-3.  A further statistical weight error 
  was detected which means that the upsilon for the new 18-3 
  transition is 1/3 of the old 17-3 value.  The corrections have been

                                             H.P. Summers, 3 June. 1998
   RADIATIVE RECOMBINATION DATA ADDED                                          
   PROCESSED BY ADAS211 ON :                                                   
                                             H.P. Summers, 10 Feb. 1997        

     Dielectronic data is post-processed from Badnell files as follows:


     The cross-referencing file is as follows:


     The parent metastable indices are as follows:

     1.    1S1                 (2)0( 0.5)

     Dielectronic data added to  19 existing rad. recom. level sets

                                             H.P. Summers, 10 Feb. 1997        



  • Keith Berrington
  • Hugh Summers
  • Kernfysisch Versneller Instituut
  • Nigel Badnell
  • Processes
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