Recombination coefficients for C Ii lines

Details Recombination coefficients for C Ii lines Recombination coefficients for C Ii lines

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..142...85d&link_type=abstract

Astronomy and Astrophysics Supplement, v.142, p.85-94

Astronomy and Astrophysics

Astrophysics

56

Atomic Data, Line: Formation, \Ion{H}{Ii} Regions, Planetary Nebulae: General

Scientific paper

Effective recombination coefficients are given for C Ii transitions between doublet states. The calculations are carried out in the temperature range 500 - 20 000; K and for an electron density of 104 cm-3. The effects of electron collisions on the excited states are included. The necessary bound-bound and bound-free radiative data are obtained from a new R-matrix calculation in which photoionization resonances are fully delineated, thereby accurately incorporating the effects of both radiative and dielectronic recombination. The R-matrix calculation includes all bound states with principal quantum number n <= 15 and total orbital angular momentum L <= 4. The effect of moving the resonance features to their experimentally determined positions is also investigated and found to be important at low temperatures. Tables 1--5 are also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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