Atomic data from the IRON Project. XLII. Electron impact excitation of Fe xxi

Details Atomic data from the IRON Project. XLII. Electron impact excitation of Fe xxi Atomic data from the IRON Project. XLII. Electron impact excitation of Fe xxi

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..143..483b&link_type=abstract

Astronomy and Astrophysics Supplement, v.143, p.483-489

Astronomy and Astrophysics

Astrophysics

13

Atomic Data, Atomic Processes

Scientific paper

Collision strengths and collisional rate parameters are provided for transitions among the n=2 and 2p3l levels of C-like Fe xxi. The data have been computed in a 52-state Breit-Pauli approximation thus accounting for the most prominent relativistic effects. An R-matrix close-coupling calculation comprising partial wave contributions up to J=59/2 and of order 8000 energy points in the range up to 260 Ryd gave cross sections expected to be accurate to better than 20% for transitions among the n=2 levels. Detailed tables of the present data are available in electronic form at the CDS via anonymous ftp to 130.79.128.5 or via http://cdsweb.u-strasbg.fr/Abstract.html. Table 3 is only available in electronic form at the CDS.

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