Space-resolved density diagnostic of a highly ionized holmium (Z=67) laser-produced plasma from 3${\mathit{d}}^{10}$4l-3${\mathit{d}}^{10}$4l’ Cu i–like lines

A space-resolved electron density diagnostic of a holmium laser-produced plasma has been performed using the intensity ratios of Cu i–like 3${\mathit{d}}^{10}$4l-3${\mathit{d}}^{10}$4l’ lines. The atomic theoretical model of the Cu i–like ion included the 3${\mathit{d}}^{10}$nl levels with n=4,5 and l=s,p,d,f. The effect of line absorption at high electron densities is discussed and the atomic data obtained with the hullac computer code are compared with previously published data.