Measurement of the Stark Broadening of Atomic Emission Lines in Non–Optically Thin Plasmas by Laser‐Induced Breakdown Spectroscopy

Sherbini, Ashraf M. El; Sherbini, Th. El; Hegazy, H.; Cristoforetti, G.; Legnaioli, Stefano; Pardini, L.; Palleschi, Vincenzo; Salvetti, A.; Tognoni, E.

doi:10.1080/00387010701300958

Cited by 19 publications

(20 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results are consistent with previous studies [21] that discussed that the population density 143 of the ground state is larger for the plasma created at the surface of the nano-based target than that 144 for bulk-based plasma, described by the enhancement factor that is defined by 145 and/or self-reversal one should rely on certain optically thin (standard) spectral lines which should 149 allow precise measurements of plasma electron density [29]. The presence of Hα emission spectra 150 provides a good candidate for the measurement of the plasma electron density, but Hα is often absent 151 during the interaction of both green and blue lasers, and therefore, one should consider other 152 The overall results are summarized in Table 1, including electron densities measured from the optically 166 thin Hα.…”

supporting

confidence: 81%

“…The effect at the central 185 become important since one can use either line to check the value of the electron density [29]. …”

mentioning

confidence: 99%

“…It was pointed out in Ref. [29] that a correction to 199 a spectral line shape against self-absorption can be carried out using a practical relation, 200   theory that can describe the spectral dip due to self-reversal does not contain an asymmetry. 227…”

mentioning

confidence: 99%

See 2 more Smart Citations

Measurement of Electron Density from Stark-Broadened Nanomaterial Plasma

Am¹,

Parigger²

2018

Preprint

View full text Add to dashboard Cite

supporting

confidence: 81%

“…The effect at the central 185 become important since one can use either line to check the value of the electron density [29]. …”

mentioning

confidence: 99%

See 1 more Smart Citation

Measurement of Electron Density from Stark-Broadened Nanomaterial Plasma

Am¹,

Parigger²

2018

Preprint

View full text Add to dashboard Cite

“…Much literature already exists on the solutions for plasma temperature, electron density, and degree of ionization [25,[28][29][30][31][32][33]. In this paper, the plasma temperature and electron number density are obtained through the Boltzmann plot and Starks broadening method.…”

Section: Plasma Temperature and Degree Of Ionization Standardizationsmentioning

confidence: 99%

A spectrum standardization approach for laser-induced breakdown spectroscopy measurements

Wang

Liu

West

et al. 2012

Spectrochimica Acta Part B: Atomic Spectroscopy

110

View full text Add to dashboard Cite

This paper presents a spectra normalization method for laser-induced breakdown spectroscopy (LIBS) measurements by converting the recorded characteristic line intensity at varying conditions to the intensity under a standard condition with standard plasma temperature, degree of ionization, and total number density of the interested species to reduce the measurement uncertainty. The characteristic line intensities of the interested species are first converted to the intensity at a fixed temperature and standard degree of ionization but varying total number density for each laser pulse analysis. Under this state, if the influence of the variation of plasma morphology is neglected, the sum of multiple spectral line intensities for the measured element can be regarded proportional to the total number density of the specific element, and the fluctuation of the total number density, or the variation of ablation mass, was compensated for by the application of this relationship. In the experiments with 29 brass alloy samples, the application of this method to determine Cu concentration shows a significant improvement over generally applied normalization method for measurement precision and accuracy. The average RSD value, average value of the error bar, R 2 , RMSEP, and average value of the maximum relative error were: 5.29%, 0.68%, 0.98, 2.72%, 16.97%, respectively, while the above parameter values for normalization with the whole spectrum area were: 8.61%, 1.37%, 0.95, 3.28%, 29.19%, respectively.

show abstract

“…This coefficient is equal to one if the line is optically thin and decrease to zero if it becomes thick [18]. We suppose first that the plasma is homogenous and we neglect the gradient of temperature and density.…”

Section: Effect Of Self-absorption On the Plasma Temperature Determinmentioning

confidence: 99%

Spatial and temporal characterization of a distilled water plasma using Laser-Induced Breakdown Spectroscopy (LIBS)—Effect of self-absorption on plasma parameters

Boussaïdi¹,

Hannachi²,

Ghalila³

et al. 2007

AIP Conference Proceedings

View full text Add to dashboard Cite

Articles you may be interested inEffects of temporal laser profile on the emission spectra for underwater laser-induced breakdown spectroscopy: Study by short-interval double pulses with different pulse durations Abstract.The spatio-temporal evolution of the plasma induced by interaction of a Nd-YAG laser pulse with the surface of distilled water is described. The temporal evolution from 200 ns after the plasma creation to 2200 ns of the H α and H β lines are reported. Supposing the Local Themodynamic Equilibrium (LTE), the two plasma parameters: electron density and temperature are determined, including the influence of the selfabsorption on its measurements. The spatial evolution of the H β intensity and of the electron density are given.

show abstract

Measurement of the Stark Broadening of Atomic Emission Lines in Non–Optically Thin Plasmas by Laser‐Induced Breakdown Spectroscopy

Cited by 19 publications

References 19 publications

Measurement of Electron Density from Stark-Broadened Nanomaterial Plasma

Measurement of Electron Density from Stark-Broadened Nanomaterial Plasma

A spectrum standardization approach for laser-induced breakdown spectroscopy measurements

Spatial and temporal characterization of a distilled water plasma using Laser-Induced Breakdown Spectroscopy (LIBS)—Effect of self-absorption on plasma parameters

Contact Info

Product

Resources

About