Measurement of electron density and temperature of a laser-induced zinc plasma

Shaikh, Nek M.; Rashid, B.; Hafeez, S.; Jamil, Yasir; Baig, M. A.

doi:10.1088/0022-3727/39/7/008

Cited by 156 publications

(97 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The emission signal was corrected by subtracting the dark signal of the detector through the OOI software. The pulse energy of the Nd:YAG laser was varied through the remote control of laser [14]. The data acquired by the spectrometer was stored on a PC through the OOI HR4000 software for subsequent analysis and the END was measured in laser produced plasma by utilizing the Stark broadening method, while ET by Boltzmann method as precisely described by Sherbini et al [31].…”

Section: Methodsmentioning

confidence: 99%

“…The ET has been evaluated using the ratio of the relative intensities of spectral lines as described by [14]. …”

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

confidence: 99%

“…Various spectroscopic factor such as statistical weight (g (ki) ), transition probability (A) wavelength () and energies (E) are given in Table 1 and 2, taken from [32][33] and for calculation of plasma ET and END, the lines appeared at 243.779 nm, 328.068 nm, 338.289 nm, 520.907 nm, 546.550 nm, 768.777 nm, 827.351 nm being used in present study. The ET was calculated from a straight line graph (ln( hcgA I λ ) versus distance) having slope (-1/ KT) and excitation temperature was taken from the Boltzmann plot, while the END was calculated by Stark broadening method using different spectral lines [14]. The ET behavior has been studied as a function of distance from 0-4.5 mm of target surface by 532 nm wavelength of laser irradiance (Fig 5).…”

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

confidence: 99%

“…During the expansion process of vapor plume the Inverse Bremsstrahlung (IB) absorption also happened repeatedly which is considered as heat loss during plasma routine applications [12]. The wavelength, intensity of incident beam, energy absorption and transfer, duration of exposure, composition of targeted material as well as the environmental condition such as ambient air pressure and distance between the target and laser has a key role in the formation of plasma from irradiated material [13][14]. Laser-induced plasma spectroscopy (LIPS), also called laser-induced breakdown spectroscopy (LIBS) is based on the optical emission spectra for the elemental analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The END and ET can be determined from the emission spectrum of the plume [14]. 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.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

Musadiq¹,

Iqbal

Amin³

et al. 2012

IJET

View full text Add to dashboard Cite

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.

show abstract

Section: Methodsmentioning

confidence: 99%

“…The ET has been evaluated using the ratio of the relative intensities of spectral lines as described by [14]. …”

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

confidence: 99%

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

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Musadiq¹,

Iqbal

Amin³

et al. 2012

IJET

View full text Add to dashboard Cite

show abstract

Influence of pulse width on the laser ablation of zinc in nitrogen ambient

2016

View full text Add to dashboard Cite

Time-resolved spectroscopic measurements of expanding plasma plumes generated by irradiating a solid zinc target with laser pulses of 7 ns and 100 fs durations are carried out in the ambient pressure range of 0.05-200 Torr of nitrogen. At the relatively high input fluence of *16 J/cm 2 , fast and slow atomic species are found to appear at different times in the optical time-offlight (OTOF) spectra, the dynamics of which is primarily determined by the pulse duration of the excitation laser. In fs LPP, the average speed of fast species is unaffected by an increase in ambient pressure, while in ns LPP, the speed is found to reduce with pressure. The slow species shows a sharp peak in the OTOF spectra with a narrow velocity distribution for fs LPP, indicating a large number density and low electron temperature, which is consistent with optical emission spectroscopic (OES) studies. On the other hand, for ns LPP, the OTOF of slow species shows a more broadened profile which can be attributed to strong plume-laser interaction. The dynamics of slow species is heavily influenced by the presence of shock waves, which leads to the occurrence of much slower species at larger pressures.

show abstract

Wavelength dependence of picosecond-pulsed laser ablation of hot-dip galvanized steel

2022

View full text Add to dashboard Cite

Laser ablation of galvanized steel at a wavelength of 343, 515 and 1030 nm was compared for single as well as multiple picosecond laser pulses. The characteristics of ablated craters, such as ablation rate, crater shape and chemical composition, in relation to the processing parameters were studied. Surface morphology of the laser ablated craters were characterized with the help of confocal laser scanning microscopy and scanning electron microscopy. Chemical compositional and crystallographic changes were analyzed by energy-dispersive X-ray spectroscopy and electron backscatter diffraction respectively. Three ablation regimes were identified in the ablation process of galvanized steel. For equal amount of fluence, ablation rates are found to increase with decreasing laser wavelength. Analyzing the crater shape and the cross-sectional chemical composition, three possible applications are identified for three different wavelengths when processing galvanized steel with picosecond pulsed lasers, namely coating removal, surface texturing and micro-drilling.

show abstract

Measurement of electron density and temperature of a laser-induced zinc plasma

Cited by 156 publications

References 38 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

Influence of pulse width on the laser ablation of zinc in nitrogen ambient

Wavelength dependence of picosecond-pulsed laser ablation of hot-dip galvanized steel

Contact Info

Product

Resources

About