Description
Radiative transfer calculations have been produced over the years for many lines and continua in the UV wavelength range of the solar atmosphere for a variety of conditions. Despite significant improvements in computing power and the availability of atomic data over time, atomic models are often still limited in size and rely on approximations for data. There have also been inconsistencies in the way photo-ionisation and radiative recombination have been treated. Here, we incorporate into the Lightweaver radiative transfer code new data and improved/new atomic processes. Data are taken from the CHIANTI database and other widely-available sources for the relevant elements. We show the significant impact this has on the UV continua in the 1100-1700Å region. The present treatment has important implications for radiative transfer calculations and the model atmosphere calculations used as inputs. If time allows, we will present new diagnostics we have developed for the solar chromosphere using lines in this wavelength region.
