Experimental measurements of Stark widths for Mn I lines in long laser spark

Popov, A. M.; Akhmetzhanov, Timur F.; Лабутин, Т.А.; Зоров, Н. Б.; Chekalin, Nikolay V.

doi:10.1016/j.sab.2016.09.014

Cited by 18 publications

(9 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The self-absorption effects were estimated to be about 10%. Furthermore, in 2016 Popov et al [88] estimated the Stark widths of 6 Mn I lines. The LIBS experiments were conducted on an aluminum alloy target containing 80 ppm of manganese, to avoid strong self-absorption of Mn I lines.…”

Section: Determination Of Stark Broadening Coefficientsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy for Determination of Spectral Fundamental Parameters

et al. 2020

View full text Add to dashboard Cite

In this review, we report and critically discuss the application of LIBS for the determination of plasma-emission fundamental parameters, such as transition probabilities, oscillator strengths, Stark broadening and shifts, of the emission lines in the spectrum. The knowledge of these parameters is of paramount importance for plasma diagnostics or for quantitative analysis using calibration-free LIBS methods. In the first part, the theoretical basis of the analysis is laid down; in the second part, the main experimental and analytical approaches for the determination by LIBS of the spectral line spectroscopic parameters are presented. In the conclusion, the future perspectives of this kind of analysis are discussed.

show abstract

Section: Determination Of Stark Broadening Coefficientsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy for Determination of Spectral Fundamental Parameters

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The long laser plasma was observed in the side-on mode using the optical configuration described earlier (Popov et al 2016). Radiation of the second harmonics (532 nm, beam diameter = 6 mm, 8 ns, 82 mJ/pulse) of the Q-switched Nd:YAG laser (model LS-2134UTF, LOTIS TII, Belarus) was focused on the surface of magnesium alloy by a glass cylindrical lens (f = 500 mm).…”

Section: Set-up Descriptionmentioning

confidence: 99%

“…We have considered the influence of Doppler, pressure, resonance, and Van der Waals broadening mechanisms on the widths of Cu I lines. Calculation methodology is described elsewhere (Popov et al 2016;Konjević 1999); Table 3 lists widths calculated for Cu lines, and broadening of Mg and Al lines due to these effects may be considered negligible (Popov et al 2016). Generally, the widths listed in Table 3 were an order or two of magnitude lower than observed ones (up to hundreds of pm, see also Section 3.3), that we could neglect the influence of above mentioned mechanisms with the exception of Doppler broadening for copper line at 5105.54 Å at long delays.…”

Section: Estimation Of Line Widths Due To Different Broadening Mechan...mentioning

confidence: 99%

“…Laser-induced plasmas (LIPs) are quite extensively used for the determination of Stark parameters (Konjević et al 2002;Skočić et al 2013;Popov et al 2017), relatively easy to work with, have considerable electron number density and allow selecting different working conditions merely by changing temporal parameters of signal acquisition. Generating of long plasma ("long spark") instead of spherical plasma can provide the following advantages for Stark parameter measurements: (i) illumination of the whole available focal plane of spectrograph, thus increasing the vertical dimension of plasma image on the detector 5-7-fold, which leads to an enhancement of signal-to-noise ratio; (ii) long spark is more homogeneous than spherical one, as we demonstrated earlier (Popov et al 2016;Popov et al 2017), resulting in lesser optical thickness and lower experimental errors (<10%).…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

The effect of hyperfine splitting on Stark broadening for three blue-green Cu i lines in laser-induced plasma

Popov

Sushkov

Лабутин

2019

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

Stark effect is observed in many natural and artificial plasmas and is of great importance for diagnostic purposes. Since this effect alters profiles of spectral lines, it should be taken into account when assessing chemical composition of radiation sources, including stars. Copper is one of the elements which studies of stellar atmospheres deal with. To this end, UV and visible Cu lines are used. However, there is a lack of agreement between existing data on their Stark parameters. It is therefore of interest to obtain new experimental data on these lines and to compare them to previous results. In this work, we have estimated Stark widths and shifts for three blue-green lines at 5105.54, 5153.24, and 5218.20 Å (corresponding transitions are [3d 10 4p] 2 P° → [3d 9 4s 2 ] 2 D and [3d 10 4d] 2 D → [3d 10 4p] 2 P°) observed in a "long-spark" laser-induced plasma. For the first time, we have accurately estimated an impact of hyperfine splitting on the profile shapes of the studied lines taking also into account the isotope shifts. We have shown that both effects considerably influence shift and width of Cu I line at 5105.54 Å, and shifts of Cu I lines at 5153.24 and 5218.20 Å.

show abstract

“…Анализ поверхности образцов перед проведением спектрального анализа выполнен в работах [2][3]. Исследование различных состояний информативного источника -электрической, лазерной и газовой плазмы, при проведении спектрального анализа и микроанализа представлено в работах [4][5][6][7].…”

unclassified

Application of Video Control for Increasing Accuracy of Spectral Analysis of Materials

Кузнецов¹,

Bryukhova²,

Golubkov³

et al. 2017

DSMM

View full text Add to dashboard Cite

Аннотация -в статье показаны пути повышения точности спектрального анализа материалов. Предлагается выполнять обработку изображения облака низкотемпературной плазмы во время проведения анализа количественного состава материалов. Описаны эксперимент и дополнение технического оснащения спектрометра системой видеоконтроля. Приведен алгоритм обработки данных, полученных при испытаниях стандартных образцов в различных режимах, в которых проводится определение количественного состава различных материалов. В работе описано дополнение состава современного спектрометра датчиками контроля излучения. Приводятся условия и стандартные образцы, использованные для получения основных результатов в работе.Ключевые слова: спектральный анализ материалов, контроль параметров плазмы, обработка видеоизображения, повышение точности и стабильности анализа.

show abstract

Experimental measurements of Stark widths for Mn I lines in long laser spark

Cited by 18 publications

References 36 publications

Laser-Induced Breakdown Spectroscopy for Determination of Spectral Fundamental Parameters

Laser-Induced Breakdown Spectroscopy for Determination of Spectral Fundamental Parameters

The effect of hyperfine splitting on Stark broadening for three blue-green Cu i lines in laser-induced plasma

Application of Video Control for Increasing Accuracy of Spectral Analysis of Materials

Contact Info

Product

Resources

About