Atomic data from the IRON Project. XXXVIII. Electron impact excitation of the fine-structure transitions in the n=3 complex of Fe XV

Details Atomic data from the IRON Project. XXXVIII. Electron impact excitation of the fine-structure transitions in the n=3 complex of Fe XV Atomic data from the IRON Project. XXXVIII. Electron impact excitation of the fine-structure transitions in the n=3 complex of Fe XV

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..137..165e&link_type=abstract

Astronomy and Astrophysics Supplement, v.137, p.165-173

Astronomy and Astrophysics

Astrophysics

19

Atomic Data, Sun: Corona

Scientific paper

As part of a systematic study of the collisional properties of Fe ions carried out by the IRON Project, electron excitation rates (effective collision strengths) are computed for all the fine-structure transitions within the n=3 complex of Fe xv in the electron temperature range 10(5<=) T/K<= 10(7) . Configuration-interaction target wavefunctions are generated with the atomic structure code superstructure, and collision strengths are computed in the close-coupling approximation with a Breit-Pauli R-matrix package. Special care is taken to resolve the resonance structure and to ensure the convergence of the partial wave expansion, specially for dipole allowed transitions. By comparing with previously calculated collision strengths in the distorted wave approximation, a 20% accuracy rating is assigned to transitions with effective collision strengths Upsilon (T)>10(-2) . A detailed Table 5 of the present effective collision strengths is only available in electronic form from the CDS via anonymous ftp 130.79.128.5 or via http://cdsweb.u-strasbg.fr/Abstract.html

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