EXPRESS: Feasibility of Using Boltzmann Plots to Evaluate the Stark Broadening Parameters of Cu(I) Lines

• Published in: Applied spectroscopy 2021-04, p.37028211013371
• Main Authors: Fikry, Mohamed, Alhijry, Ibraheem A, Aboulfotouh, A M, El Sherbini, Ashraf M
• Format: Article
• Language: English
• ISSN: 1943-3530

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 -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)Ã10 cm 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 .