Institution(s): 1. Astronomical Institute Academy of Sciences of the Czech Republic
Observed flare high intensities of the Si XIId satellite lines in comparison with the Si XIII allowed lines cannot be interpreted under the assumption of a Maxwellian distribution. This behavior of the relative line intensities can be explained by the presence of n-distribution with a higher and narrower shape than the Maxwellian one. This distribution can be formed in flaring plasma in the electric double layers and its presence is associated with type III radio bursts.
The latest atomic data to calculate the ionization equilibrium for the non-thermal n-distributions with n ranging from 1 to 19 were used. These calculations involve each of elements with atomic number up to 30. The n-distributions influence both the ionization and recombination rates and make the ion abundance peaks narrower. They can also shift the maxima of the ion abundance peaks in comparison with the Maxwellian distribution and can influence the temperature diagnostics.