Effective Collision Strengths of Fine-Structure Transitions in Fe X, Fe XI, and Fe XIII

Details Effective Collision Strengths of Fine-Structure Transitions in Fe X, Fe XI, and Fe XIII Effective Collision Strengths of Fine-Structure Transitions in Fe X, Fe XI, and Fe XIII

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...544..575t&link_type=abstract

The Astrophysical Journal, Volume 544, Issue 1, pp. 575-580.

Astronomy and Astrophysics

Astronomy

10

Atomic Data

Scientific paper

Electron excitation collision strengths for fine-structure transitions in Fe X, Fe XI, and Fe XIII are calculated using full Breit-Pauli R-matrix approach. We included 49 fine-structure levels of Fe X, 38 fine-structure levels of Fe XI, and 26 fine-structure levels of Fe XIII in our scattering calculations. These levels are represented by configuration-interaction wave functions. The relativistic effects are included in the Breit-Pauli approximation via one-body mass correction, Darwin, and spin-orbit interaction terms in the scattering equations. Rydberg series of resonances converging to the excited state thresholds are explicitly included in the calculations. The effective collision strengths are determined by integrating collision strengths and assuming a Maxwellian distribution of electron energies.

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