Opened 4 years ago

#296 new enhancement

Fe XIV atomic data

Reported by: mchatzikos Owned by: nobody
Priority: good to do Milestone: database infrastructure
Component: atomic/molecular data base Version: trunk
Keywords: Cc:


New atomic data have been computed for Fe14+. These should be more accurate than Chianti. This paper recomputes data for the lowest 136 energy levels (Chianti includes 739), and the ~10,000 transitions between them (Chianti includes ~40,000).

Energies and lifetimes are reported for the lowest 136 levels of Fe XIV, belonging to the (1s22s22p6) 3s23p, 3s3p2, 3s23d, 3p3, 3s3p3d, 3p23d, 3s3d2, 3p3d2 and 3s24\ell configurations. Additionally, radiative rates, oscillator strengths and line strengths are calculated for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2) and magnetic quadrupole (M2) transitions. Theoretical lifetimes determined from these radiative rates for most levels show satisfactory agreement with earlier calculations, as well as with measurements. Electron impact excitation collision strengths are also calculated with the Dirac atomic R-matrix code (DARC) over a wide energy range up to 260 Ryd. Furthermore, resonances have been resolved in a fine energy mesh to determine effective collision strengths, obtained after integrating the collision strengths over a Maxwellian distribution of electron velocities. Results are listed for all 9180 transitions among the 136 levels over a wide range of electron temperatures, up to 107.1 K. Comparisons are made with available results in the literature, and the accuracy of the present data is assessed.

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