25 citations · 95 across the 5 of their papers we have counts for
5 papers
Modelling low charge ions in the solar atmosphere
R. P. Dufresne, G. Del Zanna, P. J. Storey
Extensions have been made recently to the coronal approximation for the purpose of modelling line emission from carbon and oxygen in the lower solar atmosphere. The same modelling…
The influence of photo-induced processes and charge transfer on carbon and oxygen in the lower solar atmosphere
R. P. Dufresne, G. Del Zanna, N. R. Badnell
To predict line emission in the solar atmosphere requires models which are fundamentally different depending on whether the emission is from the chromosphere or the corona. At some…
Effects of density on the oxygen ionisation equilibrium in collisional plasmas
R. P. Dufresne, G. Del Zanna, N. R. Badnell
The ion populations most frequently adopted for diagnostics in collisional plasmas are derived from the density independent, coronal approximation. In higher density, lower tempera…
Fe III emission in quasars: evidence for a dense turbulent medium
Matthew J. Temple, Gary J. Ferland, Amy L. Rankine +5
Recent improvements to atomic energy-level data allow, for the first time, accurate predictions to be made for the Fe III line emission strengths in the spectra of luminous, $L_\te…
Uncertainties on atomic data. A case study: N IV
G. Del Zanna, L. Fernandez-Menchero, N. R. Badnell
We consider three recent large-scale calculations for the radiative and electron-impact excitation data of N IV, carried out with different methods and codes. The scattering calcul…