A study of the laser plasma parameters at different laser wavelengths

Abdellatif, Galila; Imam, Hisham

doi:10.1016/s0584-8547(02)00057-5

Cited by 129 publications

(65 citation statements)

References 12 publications

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“…Our results regarding the ET and END are in line with various researches e.g. Abdellatif and Imam [26] diagnosed a Al plasma produced by A Q-switched Nd:YAG laser at wavelengths 1064, 532 and 355 nm with 500, 100 and 60 mJ energies, respectively and pulse duration of 7 ns with repetition rate of 1 Hz and measured the spatial behavior of ET using the Boltzmann plot method for the Al (II) lines and the END by Stark broadening method. The maximum attainable value of the ET was found at specific distance from the target surface, while the END accomplishes its highest value close to the surface.…”

Section: Electron Temperature and Electron Number Density (End And Et)supporting

confidence: 92%

“…Various researchers world wide have studied and reported effect of laser irradiation on Cu, Li, Zn, Al, Fe, Pb, Sn, Si and their alloy under ambient pressure, vacuum and using gases like argon and neon. They also studied the END and ET behavior at different laser harmonic, energy level and distances of target material from the laser irradiance by using ranges of spectroscopic methods [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. From last few decades, due to diverse applications as well as ease of utilization, relative simplicity, low cost and highshot-rate capability of laser driven material has became a very important field and the description of material in the form of ET and END has added a substantial curiosity in recent years for the understanding and utilization of these complex matter in daily life.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of electron number density and temperature of laser-induced Silver plasma

Musadiq¹,

Iqbal

Amin³

et al. 2012

IJET

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Silver (Ag) plasma generated by second harmonics (532 nm) using Nd:YAG laser has been investigated at 17.6 mJ and 88.6 mJ energy level. The spatial behavior of the END and Electron Temperature (ET) was measured at ambient air pressures at different energy level and distance ranging from 0-4.5 mm form the target metal. The ET's were found to be varies from 17895 K to 10593 K, while END was found to be 2.229  10 15 to 6.44  10 14 cm -3 and 1.76  10 16 to 1.893  10 15 cm -3 for 17.6 mJ and 88.6 mJ energy, respectively. The relationship of END and ET found directly related to laser irradiance, while they were inverse to the distance from the target material surface to laser beam source.

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Section: Electron Temperature and Electron Number Density (End And Et)supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Measurement of electron number density and temperature of laser-induced Silver plasma

Musadiq¹,

Iqbal

Amin³

et al. 2012

IJET

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“…In the same way, the optical penetration is shorter for UV lasers, providing higher laser energy per volume unit of material. In general, the shorter the laser wavelength, the higher the ablation rate and the lower the elemental fractionation [25].…”

Section: Laser Wavelengthmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

2012

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Laser-induced breakdown spectroscopy (LIBS) is a technique that provides an accurate in situ quantitative chemical analysis and, thanks to the developments in new spectral processing algorithms in the last decade, has achieved a promising performance as a quantitative chemical analyzer at the atomic level. These possibilities along with the fact that little or no sample preparation is necessary have expanded the application fields of LIBS. In this paper, we review the state of the art of this technique, its fundamentals, algorithms for quantitative analysis or sample classification, future challenges, and new application fields where LIBS can solve real problems.

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“…recently in Refs. [10,11]. On this way, a significant number of experimental studies [12][13][14][15][16][17][18][19][20][21][22][23] has been dedicated to the investigation of the Ar I total Stark full-width at half intensity maximum (FWHM), W t of the 425.9 nm spectral line (4sV-5pV transition).…”

Section: Introductionmentioning

confidence: 99%

Stark width and shift of the neutral argon 425.9 nm spectral line

Milosavljević

Žigman

Djeniže

2004

Spectrochimica Acta Part B: Atomic Spectroscopy

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The Stark parameters, the width (W) and the shift (d), of the neutral argon (Ar I) 425.9 nm spectral line have been studied in a linear, low-pressure, optically thin pulsed arc discharge. The line shapes are measured in three different plasmas at about 16,000 K electron temperature (T) and about 7.0Â10 22 m À3 electron density (N). The separate electron and ion contributions to the total Stark width (W t ), i.e. W e and W i , as well as to the total Stark shift (d t ), i.e. d e and d i , have also been obtained and represent new experimental data in this field.On the basis of the observed asymmetry of the Stark broadened line profile we have deduced the ion broadening parameters, which describe the influence of the ion static (A) and the ion-dynamical effect on the width (D) and on the shift (E) of the line shape. Stronger influence of the ion contribution on the 425.9 nm Ar I line shape than is the one predicted by current theory has been evidenced.On the basis of the accurately recorded 425.9 nm Ar I line shape (in the 4sV-5pV transition), the basic plasma parameters, i.e. electron temperature (T) and electron density (N) have been recovered. This has been achieved by applying the recently developed line deconvolution procedure. The plasma parameters (T and N) have also been measured using independent diagnostics techniques.

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A study of the laser plasma parameters at different laser wavelengths

Cited by 129 publications

References 12 publications

Measurement of electron number density and temperature of laser-induced Silver plasma

Measurement of electron number density and temperature of laser-induced Silver plasma

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

Stark width and shift of the neutral argon 425.9 nm spectral line

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