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           Unpublished 29 state R-matrix calculations of Berrington et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(NEUTQD2)   respectively.

                                                H.P. Summers, June 1993
  Radiative recombination data is prepared using code

           JETSHP.DLS.FORT(ADASRRC)     on dataset

  H P Summers  July 1992.

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