Temperature effect on laser-induced breakdown spectroscopy spectra of molten and solid salts

Hanson, Cynthia; Phongikaroon, Supathorn; Scott, Jill R.

doi:10.1016/j.sab.2014.04.012

Cited by 47 publications

(34 citation statements)

References 35 publications

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“…To our knowledge, this study is the first research about the effect of cooling samples on LIBS spectrum, especially on super alloys. The results showed increasing the sample temperature leads to improvement in the intensity of spectral lines as shown in other works [17,18]. Increase in ablation rate can be the reason for this behavior.…”

Section: Resultssupporting

confidence: 70%

“…Sangines et al [17] studied the effect of sample temperature on the emission line intensification mechanisms in orthogonal dual-pulse LIBS. The effect of sample temperature and physical state on LIBS spectra of molten and solid salts has been investigated in [18]. Eschlbock-Fuchs et al studied the influence of sample temperature on the dynamics and optical emission of Laser-Induced Plasma (LIP) for aluminum alloy, silicon wafer, and metallurgical slag samples [19].…”

Section: Introductionmentioning

confidence: 99%

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Temperature effect on the optical emission intensity in laser induced breakdown spectroscopy of super alloys

Darbani

Ghezelbash

Majd

et al. 2014

J. Eur. Opt. Soc.-Rapid Publ.

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In this paper, the influence of heating and cooling samples on the optical emission spectra and plasma parameters of laser-induced breakdown spectroscopy for Titanium 64, Inconel 718 super alloys, and Aluminum 6061 alloy is investigated. Samples are uniformly heated up to approximately 200°C and cooled down to -78°C by an external heater and liquid nitrogen, respectively. Variations of plasma parameters like electron temperature and electron density with sample temperature are determined by using Boltzmann plot and Stark broadening methods, respectively. Heating the samples improves LIBS signal strength and broadens the width of the spectrum. On the other hand, cooling alloys causes fluctuations in the LIBS signal and decrease it to some extent, and some of the spectral peaks diminish. In addition, our results show that electron temperature and electron density depend on the sample temperature variations.

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Section: Resultssupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Temperature effect on the optical emission intensity in laser induced breakdown spectroscopy of super alloys

Darbani

Ghezelbash

Majd

et al. 2014

J. Eur. Opt. Soc.-Rapid Publ.

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“…Using the static surface configuration similar to Effenberger, 5 Hanson et al performed an in-depth LIBS study of CeCl 3 and MnCl 2 in LiCl-KCl salts at temperatures ranging from 523 K (solid) to 773 K (liquid). 6 Results of the study showed that, in general, the molten samples had less self-absorption and lower relative standard deviations (%RSDs) than the solid samples. Weisberg et al also studied a molten LiCl-KCl salt with additives of EuCl 3 and PrCl 3 using the static surface approach.…”

Section: Introductionmentioning

confidence: 94%

Laser-Induced Breakdown Spectroscopy (LIBS) in a Novel Molten Salt Aerosol System

Williams

Phongikaroon

2016

Appl Spectrosc

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In the pyrochemical separation of used nuclear fuel (UNF), fission product, rare earth, and actinide chlorides accumulate in the molten salt electrolyte over time. Measuring this salt composition in near real-time is advantageous for operational efficiency, material accountability, and nuclear safeguards. Laser-induced breakdown spectroscopy (LIBS) has been proposed and demonstrated as a potential analytical approach for molten LiCl-KCl salts. However, all the studies conducted to date have used a static surface approach which can lead to issues with splashing, low repeatability, and poor sample homogeneity. In this initial study, a novel molten salt aerosol approach has been developed and explored to measure the composition of the salt via LIBS. The functionality of the system has been demonstrated as well as a basic optimization of the laser energy and nebulizer gas pressure used. Initial results have shown that this molten salt aerosol-LIBS system has a great potential as an analytical technique for measuring the molten salt electrolyte used in this UNF reprocessing technology.

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“…In LIBS process, a part of pulse laser energy was used to heat the material before the material was evaporated and vaporized to produce plasma, so the laser energy involved in the plasma generation process was affected by the initial temperature of sample. 32) For long-short DP-LIBS, because of the pre-heat process of the long pulse, the short pulse produces the plasma at relatively stable surface temperature. Thus, for long-short DP-LIBS, the laser energy involved in the plasma generation process was basically same in different sample temperature conditions.…”

Section: Sample Temperature Effectmentioning

confidence: 99%

Sample Temperature Effect on Steel Measurement Using SP-LIBS and Collinear Long-short DP-LIBS

et al. 2020

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Temperature effect on laser-induced breakdown spectroscopy spectra of molten and solid salts

Cited by 47 publications

References 35 publications

Temperature effect on the optical emission intensity in laser induced breakdown spectroscopy of super alloys

Temperature effect on the optical emission intensity in laser induced breakdown spectroscopy of super alloys

Laser-Induced Breakdown Spectroscopy (LIBS) in a Novel Molten Salt Aerosol System

Sample Temperature Effect on Steel Measurement Using SP-LIBS and Collinear Long-short DP-LIBS

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