  Stark effect is observed in many natural and artificial plasmas and is of
great importance for diagnostic purposes. Since this effect alters profiles of
spectral lines, it should be taken into account when assessing chemical
composition of radiation sources, including stars. Copper is one of the
elements which studies of stellar atmospheres deal with. To this end, UV and
visible Cu lines are used. However, there is a lack of agreement between
existing data on their Stark parameters. It is therefore of interest to obtain
new experimental data on these lines and to compare them to previous results.
In this work, we have estimated Stark widths and shifts for three blue-green
lines at 5105.54, 5153.24, and 5218.20 A (corresponding transitions are
[3d104p] 2P{\deg} - [3d94s2] 2D and [3d104d] 2D - [3d104p] 2P{\deg}) observed
in a "long-spark" laser-induced plasma. For the first time, we have accurately
estimated an impact of hyperfine splitting on the profile shapes of the studied
lines taking also into account the isotope shifts. We have shown that both
effects considerably influence shift and width of Cu I line at 5105.54 A, and
shifts of Cu I lines at 5153.24 and 5218.20 A.
