22 citations · 75 across the 6 of their papers we have counts for
6 papers
Improving the atomic modelling for solar UV radiative transfer calculations
R. P. Dufresne, G. Del Zanna, C. M. J. Osborne
Radiative transfer calculations have been produced over the years for many lines and continua in the UV wavelength range of solar and cool stellar atmospheres for a variety of cond…
New atomic data for C I Rydberg states compared with solar UV spectra
P. J. Storey, R. P. Dufresne, G. Del Zanna
We use the Breit Pauli -matrix method to calculate accurate energies and radiative data for states in C I up to =30 and with . We provide the full dataset of decays t…
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…
Modelling ion populations in astrophysical plasmas: carbon in the solar transition region
R. P. Dufresne, G. Del Zanna
The aim of this work is to improve the modelling of ion populations in higher density, lower temperature astrophysical plasmas, of the type commonly found in lower solar and stella…