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

Abstract

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<sub>α</sub>-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)×10<sup>17</sup> cm<sup>-3</sup> 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<sub>e</sub>.T<sub>e</sub><sup>0.166</sup></i>.

WITHDRAWN: Advancing Environmental Monitoring: Unveiling Heavy Metal Contamination with Calibration-Free Picosecond Laser-Induced Breakdown Spectroscopy (CF-PS-LIBS)

“…However, LIBS is non-destructive and requires no sample preparation, whereas such approaches are destructive and need time-consuming sample preparation procedures (Qindeel and Tawfik 2014). So that no progressive digestion, such as that caused by extraction chemicals or powerful acids, was present in the samples utilized in LIBS (Arantes De Carvalho et al 2018;Fikry et al 2021;Tawfik et al 2015a;Wilberforce 2016). Additionally, LIBS is appropriate for rapid, real-time (online), sensitive, low-cost, and highspatial-resolution investigation.…”

Evaluation of Heavy Metal Presence in Agricultural Samples of Lactuca sativa and Trifolium alexandrinum Using Picosecond Laser-Induced Breakdown Spectroscopy and Flame Atomic Absorption Spectroscopy in Banha and Giza Governorates, Egypt

“…The observations of Figure 5 and Table 6 indicate that the appearance of the Ps-LIBS element spectral lines proved the presence of the metal in the sample matrix [41,75].…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…The calibration curves were extended by 1 to 3 orders of magnitude. Stark broadening was studied by Fikry et al 76 in an atmospheric pressure air LIP generated on a Cu target. The Boltzmann plot method was used to determine Stark broadening parameters, for Cu(I) lines, of 0.15 AE 0.05 A at 330.79 nm {3d 9 4s( 3 D) and 4d( 4 G-4F ) transition} and 0.17 AE 0.05 A at 359.91 nm {( 4 F-4D ) transition} and 360.20 nm {( 4 D-4D ) transition}.…”