Fikry Mohamed, Alhijry Ibraheem A, Aboulfotouh Abdelnasser M, El Sherbini Ashraf M
Laboratory of Laser and New Materials, Department of Physics, Faculty of Science, Cairo University, Giza, Egypt.
Physics Department, Faculty of Education, Hajjah University, Hajjah, Yemen.
Appl Spectrosc. 2021 Oct;75(10):1288-1295. doi: 10.1177/00037028211013371. Epub 2021 May 26.
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 neodymium-doped yttrium aluminum garnet (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 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 Å (for 330.79 nm transition) and 0.17 ± 0.05 Å (for 359.91 360.20 nm transition) at reference electron density of (1 ± 0.09) × 10cm and temperature of 10 800 ± 630 K. The apparent variation in plasma parameters at different delay times was found to scale with electron density and temperature as nT.
利用已知原子参数的Cu(I)谱线构建了线性玻尔兹曼图。将其他谱线与该图对齐，作为估算330.79、359.91和360.2 nm处Cu(I)谱线斯塔克展宽参数最可能值的一种可行方法。通过将波长为532 nm的掺钕钇铝石榴石（Nd:YAG）激光辐射聚焦在露天的纯铜靶上来产生等离子体。在3、4、5、7和10 μs的延迟时间记录等离子体发射。在整个实验过程中，使用原位光学薄H线来确定等离子体参考电子密度。按照这种方法，在参考电子密度为(1±0.09)×10 cm且温度为10800±630 K时，三条Cu(I)谱线的斯塔克展宽参数缺失值约为0.15±0.05 Å（对于330.79 nm跃迁）和0.17±0.05 Å（对于359.91 360.20 nm跃迁）。发现在不同延迟时间等离子体参数的明显变化与电子密度和温度成nT比例关系。
