Stark broadening measurement of Al II lines in a laser-induced plasma

Cirisan, M.; Cvejić, M.; Gavrilović, M. R.; Jovičević, S.; Konjević, N.; Hermann, J.

doi:10.1016/j.jqsrt.2013.10.002

Cited by 42 publications

(16 citation statements)

References 22 publications

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“…The electron density n e was deduced from Stark broadening of the spectral lines listed in Table 2 assuming a linear dependence of the Stark width on n e [24]. The applied Stark broadening parameters were measured in separate experiments [25,26]. The list of spectral lines from nickel atoms is completed by the Ar I 826.45 nm transition.…”

Section: Plasma Diagnosticsmentioning

confidence: 99%

Local thermodynamic equilibrium in a laser-induced plasma evidenced by blackbody radiation

Hermann

Grojo

Axente

et al. 2018

Spectrochimica Acta Part B: Atomic Spectroscopy

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We show that the plasma produced by laser ablation of solid materials in specific conditions has an emission spectrum that is characterized by the saturation of the most intense spectral lines at the blackbody radiance. The blackbody temperature equals the excitation temperature of atoms and ions, proving directly and unambiguously a plasma in local thermodynamic equilibrium. The present investigations take benefit from the very rich and intense emission spectrum generated by ablation of a nickel-chromium-molybdenum alloy. This alternative and direct proof of the plasma equilibrium state reopens the perspectives of quantitative material analyses via calibration-free laser-induced breakdown spectroscopy. Moreover, the unique properties of this laser-produced plasma promote its use as radiation standard for intensity calibration of spectroscopic instruments.

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Section: Plasma Diagnosticsmentioning

confidence: 99%

Local thermodynamic equilibrium in a laser-induced plasma evidenced by blackbody radiation

Hermann

Grojo

Axente

et al. 2018

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…1,5,6,8,10 Several authors calculated the Stark broadening parameters of several transition lines for the copper and some other elements using different techniques. 7,[26][27][28][29][30][31] In this paper, we shall confirm the feasibility of using the Boltzmann plot to estimate the missing values of Stark broadening parameters of the three Cu(I) lines at wavelength transitions of 330.79, 359.91, and 360.2 nm.…”

Section: Introductionmentioning

confidence: 57%

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

et al. 2021

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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 Î¼s. The in situ optically thin HÎ±-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 Â± 0.05 Ã (for 330.79 nm transition) and 0.17 Â± 0.05 Ã (for 359.91, and 360.20 nm transition) at reference electron density of (1 Â± 0.09)Ã1017 cm-3 and temperature of 10800 Â± 630 K. The apparent variation in plasma parameters at different delay times was found to scale with electron density and temperature as ~ ne.Te0.166.

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“…Indeed, transition probabilities and Stark broadening parameters are missing or given with low accuracy for many atomic and ionic lines. The situation is however progressively improving, as illustrated by the regular updates of the widely used NIST database [ 203 ] and the numerous recent reports of new data [ 204 , 205 , 206 ].…”

Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

et al. 2021

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Driven by flexibility, precision, repeatability and eco-friendliness, laser-based technologies have attracted great interest to engineer or to analyze materials in various fields including energy, environment, biology and medicine. A major advantage of laser processing relies on the ability to directly structure matter at different scales and to prepare novel materials with unique physical and chemical properties. It is also a contact-free approach that makes it possible to work in inert or reactive liquid or gaseous environment. This leads today to a unique opportunity for designing, fabricating and even analyzing novel complex bio-systems. To illustrate this potential, in this paper, we gather our recent research on four types of laser-based methods relevant for nano-/micro-scale applications. First, we present and discuss pulsed laser ablation in liquid, exploited today for synthetizing ultraclean “bare” nanoparticles attractive for medicine and tissue engineering applications. Second, we discuss robust methods for rapid surface and bulk machining (subtractive manufacturing) at different scales by laser ablation. Among them, the microsphere-assisted laser surface engineering is detailed for its appropriateness to design structured substrates with hierarchically periodic patterns at nano-/micro-scale without chemical treatments. Third, we address the laser-induced forward transfer, a technology based on direct laser printing, to transfer and assemble a multitude of materials (additive structuring), including biological moiety without alteration of functionality. Finally, the fourth method is about chemical analysis: we present the potential of laser-induced breakdown spectroscopy, providing a unique tool for contact-free and space-resolved elemental analysis of organic materials. Overall, we present and discuss the prospect and complementarity of emerging reliable laser technologies, to address challenges in materials’ preparation relevant for the development of innovative multi-scale and multi-material platforms for bio-applications.

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Stark broadening measurement of Al II lines in a laser-induced plasma

Cited by 42 publications

References 22 publications

Local thermodynamic equilibrium in a laser-induced plasma evidenced by blackbody radiation

Local thermodynamic equilibrium in a laser-induced plasma evidenced by blackbody radiation

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

Short-Pulse Lasers: A Versatile Tool in Creating Novel Nano-/Micro-Structures and Compositional Analysis for Healthcare and Wellbeing Challenges

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