blike_dmm01#ne5.dat

• Spontaneous Emission: Ne⁺⁵(i) → Ne⁺⁵(j) + hv
• Electron Impact Excitation: Ne⁺⁵(i) + e → Ne⁺⁵(j) + e

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     Last updated October 22, 2001

     See: D M Mitnik, D C Griffin and N R Badnell 2001 J. Phys. B 34
     4455 for a more complete description.

     DOI:10.1088/0953-4075/34/22/314

     The effective collision strengths in the above table are from
     a 83-term, 180-level Intermediate-Coupling Frame-Transformation
     (ICFT) R-matrix calculation that included all levels of the
     configurations 2s22p, 2s2p2, 2p3, 2s23s, 2s23p, 2s23d, 2s2p3s,
     2s2p3p, 2s2p3d, 2s24s, 2s24p, 2s24d, 2s24f, 2p23s, 2p23p, 2p23d,
     2s2p4s, 2s2p4p,  and 2s2p4d.  The CI expansion also included 2p24s,
     2p24p, 2p24d, 2p25s, 2p25p, 2p25d, 2s2p5s, 2s2p5p, and 2s2p5d where
     5s, 5p, and 5d are pseudo states.  The 1s, 2s, and 2p orbitals were
     determined from a Hartree-Fock (HF) calculation on 2s22p 2P.  The
     3s, 3p, 3d, 4s, 4p, and 4f orbitals were determined from HF
     calculations on the configurations 2s2nl.  The 5p pseudo orbital were
     determined from a multi-configuration Hartree-Fock (MCHF) on
     (2p3+2p23p+2p24p+2p25p)2P.  The 5s and 5d pseudo orbitals were
     determined from a MCHF calculation on
     (2s2p2+2p23s+2p23d+2p24s+2p24d+2p25s+2p25d) 2P.  In STG3 of the
     R-Matrix calculation, the term energies were adjusted to the
     experimental values and in the ICFT calculation the level energies
     were adjusted to the experimental values.

     For the JPI partial waves from J=0 to 12 and even and odd parity, we
     performed an LS R-matrix calculation with exchange for all LSPI
     partial waves from L=0 to L=14 and then transformed the unphysical
     K-matrices to intermediate coupling using the ICFT method.  For the
     JPI partial waves from J=13 to 40, we performed a no-exchange R-matrix
     calculation for all LSPI partial waves from L=11 to 42 and then
     transformed the unphysical K-matrices to intermediate coupling.  These
     partial waves were then topped up.  The size of the continuum basis
     was 25 and the size of the R-matrix "box" was 11.5 au.
     The radiative rates were determined from a Breit-Pauli
     CI calculation that used all 28 configuration listed above.  In the
     resonance region of the calculation, we used an energy mesh of
     9.89e-04 Ry; above all thresholds, an energy-mesh spacing of
     1.33e-01 Ry up to a total energy of 24 Ry was employed.

     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).

                     Dario M. Mitnik and Donald C. Griffin


      Update of the June 22, 2001 version. More detailed comments and some minor
      numerical differences between high lying levels at high temperatures.

      Martin O'Mullane
      29-06-2012

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Contributors

• Dario Mitnick
• Nigel Badnell
• Don Griffin
• Martin O'Mullane