Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...446..895t&link_type=abstract
Astrophysical Journal v.446, p.895
Astronomy and Astrophysics
Astronomy
10
Atomic Data, Atomic Processes
Scientific paper
The effective collision strengths for fine-structure transitions within the ground 3s23p2 configuration and from the ground 3s23p2 configuration to the excited 3s3p3 configuration in Fe XIII are calculated using R-matrix approach in an intermediate-coupling scheme. The 11 LS states 3s23p2 3P, 1D, 1S, 3s3p3 3Do, 3Po 1 Do, 3So, 1Po, 3s23p3d 3Po, 1Do of Fe XIII are considered. The target states are represented by configuration interaction wave functions. Rydberg series of resonances converging to the excited state thresholds are included in the calculation. Present results for collision strengths are compared where possible with available other calculations. Some significant differences are noted. The effective collision strengths are determined assuming a Maxwellian distribution of electron energies. These are listed over the temperature range (5-40) × 105 K.
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