Aims. The aim of this work is to analyseexperimental Stark halfwidths behaviour for the and transitionsalong the homologous sequence of single ionized noble gases. This kindof trend analysis can be useful for Stark halfwidths predictions andtherefore for spectroscopic diagnostic of astrophysical plasmas. Methods. The compilation of Stark halfwidths wasdone taking into account the measurements developed in the lastdecades. The experimental results and observed Stark halfwidth trendsfor different multiplets of ionized noble gases were compared with themodified semiempirical formula (MSE) calculations and other theoreticalestimations. Results. The analysis shows that the halfwidths ofthe spectral lines in all observed multiplets belonging to the sametransitions have a similar trend along the homologous sequence. Starkhalfwidths of transitionsare more or less constant, while those of transitionshave a clear increasing slope. Aqualitative explanation ofthe observed Stark halfwidth trends based on the energy level structureis also given. Key words: plasmas - atomic data - line:profiles
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