| Electron-impact excitation collision strengths and rate coefficients for Fe-III |
| HL.Zhang |
| Astronomy & Astrophysics Supplement Series, 1996, Vol.119, No.3, pp.523-528 |
Collision strengths and maxwellian averaged rate coefficients have
been calculated for 23871 transitions among 219 fine structure
levels, dominated by configurations 
, 
, and 
in Fe III.
Collision strengths are calculated using the R-matrix method
with a 83 term close-coupling target expansion and for electron
energies up to 10 rydbergs. Rate coefficients are tabulated at a wide
range of temperatures at which Fe III is abundant in plasma sources.
A brief discussion of the calculations and sample results are given.
The present rates for Fe III are expected to find applications in
spectral diagnostics of a variety of astrophysical sources.