Characterization of laser induced plasmas by optical emission spectroscopy: A review of experiments and methods

Aragón, C.; Aguilera, J.A.

doi:10.1016/j.sab.2008.05.010

Cited by 543 publications

(319 citation statements)

References 110 publications

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“…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%

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: 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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“…It means that an error of the temperature estimation, performed this way, could be significant. Much better is to utilize a Boltzmann plot method [28,29] based on relative intensities of multiple lines corresponding to radiative transitions between the levels i and k. The plot is constructed from individual points with the values of ln(I ki λ ki /A ki g k ) versus the upper level energy E k . Quantities I ki , λ ki , A ki , g k are as follows: the line intensity, its wavelength, the radiative transition probability and the statistical weight of the upper level, respectively.…”

Section: Resultsmentioning

confidence: 99%

Photoionized plasmas induced in molecular gases by extreme ultraviolet and X-ray pulses

Bartnik

Skrzeczanowski

Fiedorowicz

et al. 2018

EPJ Web of Conferences

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Abstract. In this work a laser-produced plasma (LPP) source was used to create low temperature plasmas. An extreme ultraviolet and soft X-ray (EUV/SXR) radiation pulse was used for ionization of molecular gases, injected into a vacuum chamber synchronously with the EUV/SXR pulse. Energies of photons exceeding 100 eV were sufficient for dissociative ionization, ionization of atoms or even ions. The resulting photoelectrons had also enough energy for further ionizations or excitations. Time resolved UV/VIS spectra, corresponding to single charged ions, molecules and molecular ions, were recorded. For spectral lines, corresponding to radiative transitions in F II and S II ions, electron temperature was calculated based on a Boltzmann plot method. Numerical simulations of the molecular spectra were fitted to the experimental spectra allowing for determination of vibrational and rotational temperatures.

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“…The reason behind this is that the optically thick line produces a deformed or asymmetrical peak in the spectrum because of saturation and self-absorption in the line profile. This causes wrong and inaccurate measurement of electron density and plasma temperature [64][65][66][67][68]. At higher values of temperature, kinematic excitement or movement of electrons increases, thereby increasing the number of collisions between electrons and, hence, LTE can be achieved very easily at higher values of temperature.…”

Section: Line Intensity Ratio and Plasma Parametersmentioning

confidence: 99%

Atomic Structure Calculations and Study of Plasma Parameters of Al-Like Ions

Goyal

Khatri

Singh

et al. 2016

Atoms

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Abstract:In the present paper, the spectroscopic properties and plasma characteristics of Al-like ions are investigated in an extensive and detailed manner by adopting the GRASP2K package based on fully relativistic Multi-Configuration Dirac-Hartree-Fock (MCDHF) wave-functions in the active space approximation. We have presented energy levels for Al-like ions for Valence-Valence (VV) and Core-Valence (CV) correlations under the scheme of active space. We have also provided radiative data for E1 transitions for Al-like ions and studied the variation of the transition wavelength and transition probability for electric dipole (E1) Extreme Ultraviolet (EUV) transitions with nuclear charge. Our calculated energy levels and transition wavelengths match well with available theoretical and experimental results. The discrepancies of the GRASP2K code results with CIV3 and RMPBT (Relativistic Many Body Perturbation Theory) results are also discussed. The variations of the line intensity ratio, electron density, plasma frequency and plasma skin depth with plasma temperature and nuclear charge are discussed graphically in detail for optically thin plasma in Local Thermodynamic Equilibrium (LTE). We believe that our obtained results may be beneficial for comparisons and in fusion and astrophysical plasma research.

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Characterization of laser induced plasmas by optical emission spectroscopy: A review of experiments and methods

Cited by 543 publications

References 110 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

Photoionized plasmas induced in molecular gases by extreme ultraviolet and X-ray pulses

Atomic Structure Calculations and Study of Plasma Parameters of Al-Like Ions

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