Stark broadening of neutral and singly ionized gallium and indium lines

N’dollo, M.; Fabry, M.

doi:10.1051/jphys:01987004805070300

Cited by 8 publications

(10 citation statements)

References 12 publications

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“…14 As with argon, Stark broadening can be neglected for electron densities below 10 19 m À3 as the FWHM is at least one order of magnitude lower than the FWHM caused by pressure broadening. 16 Figure 5(a) shows correction factors for the indium line at 410.2 nm calculated with different pressures and a fixed gas temperature of 900 K resulting in x Doppler ¼ 8:2 Â 10 À1 pm. For the FWHM of the apparatus profile, the value x app ¼ 23 pm of the spectrometer used (see Sec.…”

Section: Correction Factors For the Indium Line At 4102 Nmmentioning

confidence: 99%

Correction factors for saturation effects in white light and laser absorption spectroscopy for application to low pressure plasmas

2012

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In white light absorption spectroscopy, the broadening of the absorption signal due to the apparatus profile of the spectrometer may lead to an underestimation of the determined density as one measures an apparent optical depth. This is in particular true for high optical depth where saturation effects of the transmitted intensity occur. Provided that the line profile of the absorption line is known, the apparent optical depth effect can be accounted for by introducing a correction factor. The impact of the saturation and the approach of considering the effect are demonstrated for argon and indium lines in low pressure plasmas where correction factors of one order of magnitude or even higher are reached very easily. For the indium line, the hyperfine splitting has been taken into account. In laser absorption, the line profile is resolved. However, the weak but rather broad background emission of the laser diode can cause a saturation signal at the photo diode resulting also in an underestimation of the density obtained from the analysis. It is shown that this can be taken into account by fitting the theoretical line profile to the measured absorption signal which yields also a correction factor. The method is introduced and demonstrated at the example of the cesium resonance line including the hyperfine splitting. Typical correction factors around two are obtained for the cesium ground state density at conditions of a low pressure negative hydrogen ion source in which cesium is evaporated to enhance the negative ion production.

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Section: Correction Factors For the Indium Line At 4102 Nmmentioning

confidence: 99%

Correction factors for saturation effects in white light and laser absorption spectroscopy for application to low pressure plasmas

2012

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“…Stark widths for some neutral and singly ionized indium lines, have been determined experimentally [1] by the spectroscopic observation of a sodium-indium arc. Moreover recently have been determined theoretically within the semiclassical perturbation approach [2,3] Stark broadening parameters for 20 In III multiplets [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [1] Stark widths for 7 In I multiplets have been determined within the GBKO semiclassical theory [6], and for 10 In II multiplets within Griem's semiempirical approach [7]. Also, Stark widths and shifts for the resonance In I and In II lines have been estimated with the help of regularities and systematic trends [8].…”

Section: Introductionmentioning

confidence: 99%

Stark Broadening of In II Spectral Lines

Dimitrijević

Sahal‐Bréchot

2002

Phys. Scr.

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Experimental data for antiferromagnetic nanoparticles are often analyzed as if the particles were ferromagnetic. However, due to the volume dependence of the magnetization resulting from uncompensated spins, such analysis will yield erroneous results. This is demonstrated as we analyze ac and dc magnetization data as well as Mössbauer spectra obtained for ferritin. The values of the median energy barrier obtained from the different data are in very close agreement when a distribution of volumes and a volume dependence of the magnetization are taken into account. However, when the volume dependence of the magnetization is neglected, erroneous values of the anisotropy energy barrier and the attempt time τ 0 are obtained.

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“…(7) is rewritten as the function of optical depth and D as follows. First, the ratio of C Ga ∕C In was determined to be 0.69 using the wavelength and the Stark broadening (w Ga 9.8 × 10 −4 nm and w In 6.2 × 10 −4 nm [12]) of the Ga(I) 417.204 nm and In(I) 410.175 nm lines. Next, considering that the sum of Ga and In atomic concentrations of the CIGS samples in Table 1 was nearly constant (∼26%), assuming a stoichiometric ablation, the populations of Ga and In atoms within the LIBS plasma was written as…”

mentioning

confidence: 99%

“…2 were fitted to Eq. (12), and the results are summarized in Table 3. From the fitting results, first it is noticed that the D value increases as the laser fluence decreases (see conditions 1, 2, and 3 for the 532 nm laser).…”

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confidence: 99%

Influence of plasma conditions on the intensity ratio calibration curve during laser induced breakdown spectroscopy analysis

Kim

Lee

et al. 2014

Opt. Lett.

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Quantitative prediction of elemental concentration or concentration ratio of solid samples can be achieved by laser induced breakdown spectroscopy if a calibration curve that is little influenced by plasma conditions could be obtained. This work demonstrates that such a calibration curve is available for copper indium gallium diselenide (CuIn(1-x)Ga(x)Se₂) thin film solar cells for properly selected spectral lines. The possible changes of calibration curves based on the selected spectral lines are discussed in consideration of self-absorption in optically thick plasma and the dependency of spectral line properties on plasma temperature.

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Stark broadening of neutral and singly ionized gallium and indium lines

Cited by 8 publications

References 12 publications

Correction factors for saturation effects in white light and laser absorption spectroscopy for application to low pressure plasmas

Correction factors for saturation effects in white light and laser absorption spectroscopy for application to low pressure plasmas

Stark Broadening of In II Spectral Lines

Influence of plasma conditions on the intensity ratio calibration curve during laser induced breakdown spectroscopy analysis

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