Neutral lithium spectral line 460.28 nm with forbidden component for low temperature plasma diagnostics of laser-induced plasma

Cvejić, M.; Stambulchik, E.; Gavrilović, M. R.; Jovičević, S.; Konjević, N.

doi:10.1016/j.sab.2014.08.007

Cited by 5 publications

(11 citation statements)

References 33 publications

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“…On the other hand, the experimental data were mainly obtained for plasmas with significantly lower electron concentrations and temperatures. Also previous work [18] As it is evident, the experimental results and calculations are consistent within the uncertainty limits, with a maximum deviation of 4% for FWHM and F/A and 7% for Δλ af . Discrepancies exist mostly for the red wing of the line profile (see figure 6) that grow with electron concentration and temperature.…”

Section: The Lii 460 Nm Line Profilesupporting

confidence: 85%

“…Such procedure allows to treat the resulting profiles as originating from the optically thin medium in further analysis. Radially resolved spectra were then obtained applying the inverse Abel transform in the same way as it has been recently described by Cvejić et al [18,21]. In further analysis, only the spectra obtained for the central, homogeneous part of the plasma column (see figure 4), i.e.…”

Section: Plasma Diagnostics By Laser Ts Methodsmentioning

confidence: 99%

“…In fact, electron densities were inferred by comparing the measured line profiles with calculations performed by Sassi [17] for n e in the range of (0.1−1.5)×10 22 m −3 . Much more comprehensive studies, experimental and theoretical, have been recently performed by Cvejić et al [18]. The overall line shapes, measured in laser-induced plasma (LIP), were compared with those calculated by the CS method.…”

Section: Introductionmentioning

confidence: 99%

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Study of Stark broadening of Li i 460 and 497 nm spectral lines with independent plasma diagnostics by Thomson scattering

Dzierżęga

Pięta

Zawadzki

et al. 2018

Plasma Sources Sci. Technol.

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We present results of experimental and theoretical studies of the Stark broadening of the LiI 460 nm spectral line with forbidden components and of the isolated 497 nm line. Plasma was induced by Nd:YAG laser radiation at 1064nm with pulse duration ∼4.5ns. Laser-induced plasma was generated in front of the alumina pellet, with some content of Li 2 CO 3 , placed in a vacuum chamber filled with argon under reduced pressure. Plasma diagnostics was performed using the laser Thomson scattering technique, free from assumptions about the plasma equilibrium state and its composition and so independently of plasma emission spectra. Spatially resolved spectra with Li lines were obtained from the measured, laterally integrated ones applying the inverse Abel transform. The Stark profiles were calculated by computer simulation method assuming a plasma in the local thermodynamic equilibrium. Calculations were performed for experimentally-inferred electron densities and temperatures, from 1.422×10 23 to 3.55×10 22 m −3 and from 1.96eV to 1.04eV, respectively. Our studies show very good agreement between experimental Stark profiles and those computer simulated.

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Section: The Lii 460 Nm Line Profilesupporting

confidence: 85%

Section: Plasma Diagnostics By Laser Ts Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of Stark broadening of Li i 460 and 497 nm spectral lines with independent plasma diagnostics by Thomson scattering

Dzierżęga

Pięta

Zawadzki

et al. 2018

Plasma Sources Sci. Technol.

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show abstract

“…For plasma diagnostics, laser has been used to generate a plasma called "laser-induced plasma (LIP)" [1][2][3][4]. A spectral line profile [1] or self absorption phenomenon [2] occurring in the LIP was used to determine the electron number density for plasma diagnostics.…”

Section: Introductionmentioning

confidence: 99%

“…A spectral line profile [1] or self absorption phenomenon [2] occurring in the LIP was used to determine the electron number density for plasma diagnostics. The temperature of the LIP was characterized using infrared spectral lines [3].…”

Section: Introductionmentioning

confidence: 99%

In-Line Hologram for Plasma Diagnostics

Kim

Jung

2016

Journal of the Optical Society of Korea

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Diagnostic sensors are demanded during plasma processes. Holograms of plasma taken with laser light without a reference beam were used to monitor behaviors of charged particles produced in nitrogen plasma as a function of electrode temperature ranging between 50 and 300℃. Holograms were characterized as a function of the pixel sum and grayscale value. Pixel sum calculated in identified grayscale ranges strongly correlated with ion density and emitted light intensity measured with a langmuir probe and optical emission spectroscopy, respectively. The performance was further evaluated with data acquired as a function of N2 and NH3 flow rates and improved correlations were observed in the new grayscale range. The confirmed correlations indicate that a hologram is a viable means to diagnose behaviors of plasma particles such as ions. Underlying principles are discussed in view of particle and charge composing vacuum and light.

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Division B Commission 14 Working Group: Collision Processes

Peach¹,

Dimitrijević²,

Barklem³

2015

Proc. IAU

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Since our last report (Peach & Dimitrijević 2012), a large number of new publications on the results of research in atomic and molecular collision processes and spectral line broadening have been published. Due to the limited space available, we have only included work of importance for astrophysics. Additional relevant papers, not included in this report, can be found in the databases at the web addresses provided in Section 6. Elastic and inelastic collisions between electrons, atoms, ions, and molecules are included, as well as charge transfer in collisions between heavy particles which can be very important.

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Neutral lithium spectral line 460.28 nm with forbidden component for low temperature plasma diagnostics of laser-induced plasma

Cited by 5 publications

References 33 publications

Study of Stark broadening of Li i 460 and 497 nm spectral lines with independent plasma diagnostics by Thomson scattering

Study of Stark broadening of Li i 460 and 497 nm spectral lines with independent plasma diagnostics by Thomson scattering

In-Line Hologram for Plasma Diagnostics

Division B Commission 14 Working Group: Collision Processes

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