2010
DOI: 10.1016/j.sab.2010.03.020
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Determination of the local electron number density in laser-induced plasmas by Stark-broadened profiles of spectral lines

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Cited by 64 publications
(41 citation statements)
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“…Particularly, the apparent temperature measured with lines of neutral atoms is different from that obtained from lines of ions with a unit charge, given that the two ionization states occupy different regions of the plasma. The same occurs with electron density when it is obtained from the experimental profile measured with spatial integration [37]. In the same way, in the present work we consider that the parameters βA, Nl and T deduced from the fitting of a calculated Cσ curve to the experimental Cσ graph are apparent parameters, as this curve is obtained by integration of the equation of radiative transfer using a simple model of homogeneous plasma instead of the true complex inhomogeneous distribution of plasma parameters.…”
Section: Plasma Inhomogeneity Apparent Parameters and Validity Of Thmentioning
confidence: 71%
“…Particularly, the apparent temperature measured with lines of neutral atoms is different from that obtained from lines of ions with a unit charge, given that the two ionization states occupy different regions of the plasma. The same occurs with electron density when it is obtained from the experimental profile measured with spatial integration [37]. In the same way, in the present work we consider that the parameters βA, Nl and T deduced from the fitting of a calculated Cσ curve to the experimental Cσ graph are apparent parameters, as this curve is obtained by integration of the equation of radiative transfer using a simple model of homogeneous plasma instead of the true complex inhomogeneous distribution of plasma parameters.…”
Section: Plasma Inhomogeneity Apparent Parameters and Validity Of Thmentioning
confidence: 71%
“…[6] studied the expansion of a vapor plume ablated from an Al target into an argon gas at atmospheric pressure using time and spaceresolved emission spectroscopy and found plasma core with quite uniform distributions in electron density, temperature and electron number densities. Aragón and Aguilera [22] measured the local electron density in laser-induced plasma of three reference lines (Hα, Fe I and Si II) in air using a Nd:YAG laser and observed that the three lines was emitted from different regions of the plasma. Prokisch et al [25] determined the electron number densities and temperatures for modified MPT and the END and ET were found in the range of 10 20 m 3 to 10 21 m 3 and of 16000-18000 K, respectively.…”
Section: Electron Temperature and Electron Number Density (End And Et)mentioning
confidence: 99%
“…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%
“…Determination of N e using relatively large Stark-broadening of the H-atom was further applied by various groups [52][53][54][55][56][57]. Recent work extends to application of the hydrogen Balmer alpha line for comparative studies of Stark broadening [58]. Several atomic lines were utilized to determine electron number density, but specifically the determination of spatially resolved electron number density from H α (656.28 nm), Fe I (505.60 nm) and Si II (538.34 nm) revealed that emissions from these three lines occurred from different regions in the plasma [58].…”
Section: Introductionmentioning
confidence: 99%