On the stoichiometry of mass transfer from solid to plasma during pulsed laser ablation of brass

Hermann, J.; Mercadier, Laurent; Mothe, Emilien; Socol, G.; Alloncle, Anne-Patricia

doi:10.1016/j.sab.2010.03.015

Cited by 29 publications

(24 citation statements)

References 30 publications

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“…It was suggested that for the experimental setup used, the condition of stoichiometric ablation, an underlying assumption of the CF-LIBS method, was not satisfied. While the stoichiometric ablation of brass is observed at low pressure in an argon gas environment [24], a similar discrepancy between values calculated by CF-LIBS and the actual composition has also been reported for experiments in air using a conventional duration ns single pulse [25,26]. Lednev et al [25] suggested a Corrected CF-LIBS (CCF-LIBS) approach in which the preferential evaporation of a specific element due to nonstoichiometric ablation is taken into account in the calculation.…”

Section: Introductionmentioning

confidence: 60%

Calibration-free analysis of immersed brass alloys using long-ns-duration pulse laser-induced breakdown spectroscopy with and without correction for nonstoichiometric ablation

Takahashi

Thornton

Ohki³

et al. 2015

Spectrochimica Acta Part B: Atomic Spectroscopy

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a b s t r a c t Keywords:Laser-induced breakdown spectroscopy (LIBS) Calibration-free LIBS Liquid-phase laser ablation Quantitative analysis Long-pulse laser Long-ns-duration, single pulse laser-induced breakdown spectroscopy (LIBS) is known to be an effective method to observe well resolved spectra from samples immersed in water at high hydrostatic pressures. The aim of this study is to investigate whether the signals obtained using this method are suitable for quantitative analysis of chemical composition. Six certified brass alloys consisting of copper (Cu), zinc (Zn) and lead (Pb) were measured underwater using a laser pulse of duration 250 ns, and their compositions were determined using calibration-free LIBS (CF-LIBS) and corrected CF-LIBS (CCF-LIBS) methods. The mass fractions of Cu and Zn calculated using CF-LIBS showed better agreement with the certified values than those determined using CCF-LIBS, with relative errors of Cu 4.2 ± 3.3 % and Zn 7.2 ± 6.4 %. From the results, it can be said that the difference of preferential evaporation and ablation among elements does not need to be considered for underwater measurements with the long-pulse LIBS setup used in this work. While the results indicate that the CF-LIBS method can be applied for in situ quantitative analysis of major elements with concentrations N~10 %, the mass fractions determined for Pb, with concentrations b 5 % had large relative errors, suggesting that an alternative method is required to quantify minor elements.

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Section: Introductionmentioning

confidence: 60%

Calibration-free analysis of immersed brass alloys using long-ns-duration pulse laser-induced breakdown spectroscopy with and without correction for nonstoichiometric ablation

Takahashi

Thornton

Ohki³

et al. 2015

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…Moreover, due to the larger size of the aluminum droplets, the change in transmission for aluminum coatings is higher. In the case of brass-derived samples, the spectrum of the center area of the brass coating shows a maximum at around 450 nm, corresponding to the Local Surface Plasmon Resonance (LSPR) band of pure Copper [11]. For lower thicknesses (intermediate and edge points) the presence of metal particles, in concrete, copper particles, is minor.…”

Section: Resultsmentioning

confidence: 99%

Metallic coatings obtained by Pulsed Laser Deposition through a dynamic prism system

Cambronero-López

Rey-García

Bao-Varela

et al. 2014

Laser Sources and Applications II

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Metal coatings have been produced using a Pulsed Laser Deposition (PLD) process based on a dynamic prism system. A nanosecond pulsed Nd:YVO 4 laser emitting at a wavelength of 1064 nm is steared through a couple of prisms into a metallic target placed inside a vacuum chamber. This work presents the study of the parameters applied to achieve ablation of two metallic targets, aluminum and brass, in order to obtain their respective metallic coatings on glass substrates by pulsed laser deposition. The results obtained allow to standardize the optimal laser and set-up parameters in order to obtain homogeneous layers, tunable thickness and/or semi-transparent mirror behaviour through the formation of an adequate plasma plume. Microstructure and transmittance spectra of these coatings are also reported.

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“…Only few reports are given regarding the correlation between the plasma plume and the properties of the grown film. The laser-produced plasma (LPP) formed during the ablation process provides information on the characteristics of the particles being transferred to the film [9]. Previous studies showed the effect of energy fluence from the UV laser source on the dynamics of the plasma expansion and the stoichiometry of BSCCO films [10].…”

mentioning

confidence: 99%

“…The radiation emitted by the plasma is collected, monitored, and analyzed spectroscopically during the various stages of the plasma evolution [11]. This technique is an effective way to determine the composition and other properties of the LPP [9,12,13].In this paper, we investigate the different plasma parameters of laser-produced Y-doped BSCCO plasma using time-resolved optical emission spectroscopy. The optical emission spectra were simultaneously collected with the laser deposition of Bi 2 Sr 2 Ca 1-x YxCu2O 8+δ films using a 1064 nm Q-switched Nd:YAG laser.…”

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confidence: 99%

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Stoichiometric transfer by infrared pulsed laser deposition of y-doped Bi–Sr–Ca–Cu–O investigated using time-resolved optical emission spectroscopy

et al. 2012

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0.30, and 0.49 on an MgO (100) substrate was conducted using a Q-switched 1064 nm Nd:YAG laser The laser-produced plasma (LPP) emission was collected during the deposition. Time-resolved optical emission spectroscopy reveals that the plasma plume consists of neutral atoms and ions. SEM images indicate that clusters of correct stoichiometry arrive on the substrate surface. Our result confirms that IR PLD transfers material stoichiometrically. Keywords: pulsed laser deposition, plasma diagnostic techniques and instrumentation.Introduction. Pulsed laser deposition (PLD) has been extensively used in the fabrication of high-temperature superconductors such as Bi 2 Sr 2 CaCu2O 8+δ (Bi-2212) [1][2][3][4][5]. It is a flexible and straightforward technique effective in growing highly crystalline films with smooth surface morphology suitable for device applications [3,4]. Various parameters of the laser, target, and deposition conditions influence the quality of PLD films. The laser wavelength and energy density, nature of the target, and deposition time can be explored to achieve high-quality superconducting Bi-2212 films [1][2][3][4][5]. One of the challenges in PLD is the preservation of the stoichiometry between the target and the film. This was resolved recently by using an IR pulsed laser as an excitation source in fabricating Bi-2212 films [6].Most publications in PLD focus on the characterization of the films [3-8]. Only few reports are given regarding the correlation between the plasma plume and the properties of the grown film. The laser-produced plasma (LPP) formed during the ablation process provides information on the characteristics of the particles being transferred to the film [9]. Previous studies showed the effect of energy fluence from the UV laser source on the dynamics of the plasma expansion and the stoichiometry of BSCCO films [10]. One of the methods used to determine the plasma parameters is time-resolved optical emission spectroscopy. The radiation emitted by the plasma is collected, monitored, and analyzed spectroscopically during the various stages of the plasma evolution [11]. This technique is an effective way to determine the composition and other properties of the LPP [9,12,13].In this paper, we investigate the different plasma parameters of laser-produced Y-doped BSCCO plasma using time-resolved optical emission spectroscopy. The optical emission spectra were simultaneously collected with the laser deposition of Bi 2 Sr 2 Ca 1-x YxCu2O 8+δ films using a 1064 nm Q-switched Nd:YAG laser. The surface morphology, atomic composition, and transition temperature of the films with different Y concentrations were evaluated in consideration of the LPP spectra.Experimental. PLD was conducted in a vacuum chamber at a pressure of 10 -2 mbar for 180 min. The

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On the stoichiometry of mass transfer from solid to plasma during pulsed laser ablation of brass

Cited by 29 publications

References 30 publications

Calibration-free analysis of immersed brass alloys using long-ns-duration pulse laser-induced breakdown spectroscopy with and without correction for nonstoichiometric ablation

Calibration-free analysis of immersed brass alloys using long-ns-duration pulse laser-induced breakdown spectroscopy with and without correction for nonstoichiometric ablation

Metallic coatings obtained by Pulsed Laser Deposition through a dynamic prism system

Stoichiometric transfer by infrared pulsed laser deposition of y-doped Bi–Sr–Ca–Cu–O investigated using time-resolved optical emission spectroscopy

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