New spectroscopic data for diagnostics of low temperature plasmas

Recently determined transition probabilities for spectral lines of atomic carbon and nitrogen from the visible and infrared part of the spectrum are reviewed. New Stark broadening measurements for selected nitrogen lines and infrared hydrogen transitions of the Paschen series, useful for diagnostics of low temperature plasmas, are reported. The reviewed data have been obtained from emission measurements applying a wall-stabilized arc operated at atmospheric pressure in a mixture of helium and the elements under study. The experimental data are compared with recent advanced calculations. The results are very useful for many applications e.g. for interpretation of stellar spectra and diagnostics of low temperature plasmas, containing the above mentioned elements.