Evaluation of self-absorption coefficients of aluminum emission lines in laser-induced breakdown spectroscopy measurements

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

doi:10.1016/j.sab.2005.10.011

Cited by 290 publications

(220 citation statements)

References 21 publications

Supporting

Mentioning

215

Contrasting

Unclassified

Order By: Relevance

“…The quantification of selfabsorption and/or self-reversal that one should rely on certain optically thin (standard) spectral lines should allow precise measurements of plasma electron density [23]. The presence of Hα emission spectra provides a good candidate for the measurement of the plasma electron density, but Hα is often absent during the interaction of both green and blue lasers.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of Electron Density from Stark-Broadened Spectral Lines Appearing in Silver Nanomaterial Plasma

Sherbini

Parigger

2018

Atoms

View full text Add to dashboard Cite

This work communicates results from optical emission spectroscopy following laser-induced optical breakdown at or near nanomaterial. Selected atomic lines of silver are evaluated for a consistent determination of electron density. Comparisons are presented with Balmer series hydrogen results. Measurements free of self-absorption effects are of particular interest. For several silver lines, asymmetries are observed in the recorded line profiles. Electron densities of interest range from 0.5 to 3 × 10 17 cm −3 for five nanosecond Q-switched Nd:YAG radiation at wavelengths of 1064 nm, 532 nm, and 355 nm and for selected silver emission lines including 328.06 nm, 338.28 nm, 768.7 nm, and 827.3 nm and the hydrogen alpha Balmer series line at 656.3 nm. Line asymmetries are presented for the 328.06-nm and 338.28-nm Ag I lines that are measured following generation of the plasma due to multiple photon absorption. This work explores electron density variations for different irradiance levels and reports spectral line asymmetry of resonance lines for different laser fluence levels.

show abstract

Section: Resultsmentioning

confidence: 99%

“…τ SA [23]. In this scenario, τ SA 0 − κ SA (λ) dλ is the plasma optical depth due to the self-absorption coefficient κ SA (λ) integrated over the whole spectral line region, ∆λ, along with the line-of-sight for plasma having an approximate length .…”

Section: Resultsmentioning

confidence: 99%

Measurement of Electron Density from Stark-Broadened Spectral Lines Appearing in Silver Nanomaterial Plasma

Sherbini

Parigger

2018

Atoms

View full text Add to dashboard Cite

show abstract

“…The self-absorption factor 12 , SA, is functionally identical to that for the self-reversal factor, SR,…”

Section: Resultsmentioning

confidence: 99%

“…(5) The value for the exponent is taken to be α = -0.54, in analogy to previously reported self-absorption studies 12 .…”

Section: Resultsmentioning

confidence: 99%

Self-Absorption Analysis of Silver Resonance Lines in Nano-Material Laser Produced Plasma

Sherbini¹,

Ma²,

Mr³

et al. 2018

Preprint

View full text Add to dashboard Cite

The resonance spectra of neutral silver indicate self-absorption for the studied Ag I lines at the wavelengths of 327.9 nm and 338.2 nm. The center dip is associated with self-reversal due to self-absorption in the plasma. The Q-switched radiation of 355 nm, 532 nm, or 1064 nm from a Nd:YAG laser device generates the plasma at the surface of silver nano-material targets, with experiments conducted in standard ambient temperature and pressure laboratory air. Procedures for recovery of the spectral line shapes confirm that over and above the effects of selfreversal, line shape distortion are important in the analysis. The work discusses parameters describing selfabsorption when using fluence levels of 2 to 33 J/cm 2 to generate the plasma. Furthermore, subsidiary calibration efforts that utilize the hydrogen alpha line of the Balmer series show that the Ag I lines at 827.35 nm and 768.7 nm are optically thin.

show abstract

“…influencing the LIBS spectrum, and in particular self absorption effects [22][23][24][25][26][27][28] and matrix effects [29][30][31]. In this work, the self absorption effects on pure manganese will be studied, and the theoretical basis o f the spectral analysis will be laid.…”

mentioning

confidence: 99%

Evaluation of self-absorption of manganese emission lines in Laser Induced Breakdown Spectroscopy measurements

Bredice

Borges

Sobral

et al. 2006

Spectrochimica Acta Part B: Atomic Spectroscopy

Self Cite

128

View full text Add to dashboard Cite

show abstract

Evaluation of self-absorption coefficients of aluminum emission lines in laser-induced breakdown spectroscopy measurements

Cited by 290 publications

References 21 publications

Measurement of Electron Density from Stark-Broadened Spectral Lines Appearing in Silver Nanomaterial Plasma

Measurement of Electron Density from Stark-Broadened Spectral Lines Appearing in Silver Nanomaterial Plasma

Self-Absorption Analysis of Silver Resonance Lines in Nano-Material Laser Produced Plasma

Evaluation of self-absorption of manganese emission lines in Laser Induced Breakdown Spectroscopy measurements

Contact Info

Product

Resources

About