Resolved Specific Ion Data Collections

Temperature Range
1.723 eV → 431 eV


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  • Spontaneous Emission: Be+3(i) → Be+3(j) + hv
  • Electron Impact Excitation: Be+3(i) + e → Be+3(j) + e
1s1 2S0.5 0.0 cm-1
2s1 2S0.5 1316850.0 cm-1
2p1 2P2.5 1316850.0 cm-1
3s1 2S0.5 1560710.0 cm-1
3p1 2P2.5 1560710.0 cm-1
3d1 2D4.5 1560710.0 cm-1
4s1 2S0.5 1646060.0 cm-1
4p1 2P2.5 1646060.0 cm-1
4d1 2D4.5 1646060.0 cm-1
4f1 2F6.5 1646060.0 cm-1

     From a 57 term R-matrix with pseudo states (RMPS) calculation.
     The close-coupling expansion included the 9 spectroscopic terms
     arising from the configurations 1s, 2l, 3l, and 4l. In addition it,
     included the 48 pseudo-state terms arising from the configurations
     5l with l = 0 to 4 and nl with n = 6 to 12 and l = 0 to 5.  The
     pseudo orbitals were generated from a set of non-orthogonal
     Laguerre orbitals that were then orthogonalized to the spectroscopic
     orbitals and to each other.  The screening parameters for the Laguerre
     orbitals were adjusted to obtain a good distribution of pseudo states
     above and below the ionization limit.  In STG3 of the R-Matrix
     calculation, the term energies were adjusted to the experimental

     For all LSPI partial waves from L=0 to 11, we performed an RMPS
     calculation with exchange.  For the LSPI partial waves from L=12
     to 50, we performed a no-exchange RMPS calculation. These partial
     waves were then topped up.  The size of the continuum basis was
     51 and the size of the R-matrix "box" was 21.4 au. In the resonance
     region of the calculation, we used an energy mesh spacing of
     5.0e-04 Ryd; above all thresholds of the 5l configurations, we
     employed an energy-mesh spacing of 1.4e-02 Ryd up to a total
     energy of 30 Ryd.

     Note we do not include data for transitions between degenerate levels
     for hydrogenic systems

     The numbers in the last column of the above table are the theoretical
     values for the reduced effective collision strengths in the infinite
     temperature limit as defined in Burgess and Tully Astron. Astrophys.
     254 436 (1992).

     NAME: C Ballance and D Griffin    DATE: July 22, 2003



  • Connor Ballance
  • Don Griffin
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