A linear Boltzmann plot was constructed using Cu I-lines of well-known atomic parameters. Aligning other spectral lines to the plot was adopted as a viable way to estimate the most probable values of Stark broadening parameters of Cu I-lines at 330.79, 359.91, and 360.2 nm. Plasma was generated by focusing of Nd: YAG laser radiation at wavelength 532 nm on a pure copper target in open air. Plasma emission was recorded at delay times of 3, 4, 5, 7, and 10 μs. The in situ optically thin H_α-line was used to determine the plasma reference electron density over the entire experiment. Following this method, the missing values of the Stark broadening parameters of the three Cu-I lines turn out to be about 0.15 ± 0.05 à (for 330.79 nm transition) and 0.17 ± 0.05 à (for 359.91, and 360.20 nm transition) at reference electron density of (1 ± 0.09)×10¹⁷ cm^-3 and temperature of 10800 ± 630 K. The apparent variation in plasma parameters at different delay times was found to scale with electron density and temperature as <i>~ n_e.T_e^0.166</i>.

使用已知原子参数的 Cu I 线构建线性玻尔兹曼图。将其他谱线与该图对齐被用作一种可行的方法来估计 330.79、359.91 和 360.2 nm 处 Cu I 谱线的斯塔克展宽参数的最可能值。等离子体是通过将波长为 532 nm 的 Nd:YAG 激光辐射聚焦在露天的纯铜靶上而产生的。等离子体排放记录在 3、4、5、7 和 10 μs 的延迟时间。原位光学薄 H_α 线用于确定整个实验中的等离子体参考电子密度。按照这种方法，三个 Cu-I 线的 Stark 展宽参数的缺失值大约为 0.15 ± 0.05 ×（对于 330.79 nm 跃迁）和 0.17 ± 0.05 ×（对于 359.91 和 360。