scholarly journals Stark Width Data for Tb II, Tb III and Tb IV Spectral Lines

Data ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 28
Author(s):  
Milan S. Dimitrijević
Keyword(s):  
Electron Density ◽  
Semiempirical Method ◽  
Spectral Lines ◽  
Stark Width ◽  
Transition Array

A dataset of Stark widths for Tb II, Tb III and Tb IV is presented. To data obtained before, the results of new calculations for 62 Tb III lines from 5d to 6pj(6,j)o, a transition array, have been added. Calculations have been performed by using the simplified modified semiempirical method for temperatures from 5000 to 80,000 K for an electron density of 1017 cm−3. The results were also used to discuss the regularities within multiplets and a supermultiplet.

scholarly journals ON THE STARK BROADENING OF Ru III SPECTRAL LINES

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Milan S. Dimitrijević
Keyword(s):  
Electron Density ◽  
Semiempirical Method ◽  
Spectral Lines ◽  
Half Maximum ◽  
Stark Broadening ◽  
Temperature Range ◽  
And Shifts ◽  
Doubly Charged ◽  
Stark Width

Stark broadening parameters, full widths at half maximum (FWHM) and shifts for spectral lines within six multiplets of doubly charged ruthenium ions have been calculated, for an electron density of 1017 cm-3 and temperature range from 10 000 K to 160 000 K. Calculations have been performed with the simplified modified semiempirical (SMSE) approach. In the case of two multiplets, it is possible to apply the full modified semiempirical method. The corresponding calculations have been performed and results are compared in order to test and determine the accuracy of the SMSE approach. The results are also used for the consideration of Stark width and shift regularities in Ru III spectrum.

Measurement of Dysprosium Stark Width and the Electron Impact Width Parameter

2018 ◽  
Vol 73 (2) ◽  
pp. 203-213 ◽  
Author(s):  
Jhonatha R. dos Santos ◽  
Jonas Jakutis Neto ◽  
N. Rodrigues ◽  
M.G. Destro ◽  
José W. Neri ◽  
...  
Keyword(s):  
Electron Density ◽  
Impact Parameter ◽  
Plasma Temperature ◽  
Spectral Lines ◽  
Emission Lines ◽  
Spectroscopic Methods ◽  
Species Concentration ◽  
The Impact ◽  
Stark Width

In this work, we suggest a methodology to determine the impact parameter for neutral dysprosium emission lines from the characterization of the plasma generated by laser ablation in a sealed chamber filled with argon. The procedure is a combination of known consistent spectroscopic methods for plasma temperature determination, electron density, and species concentration. With an electron density of 3.1 × 1018 cm–3 and temperature close to 104 K, we estimated the impact electron parameter for nine spectral lines of the neutral dysprosium atom. The gaps in the impact parameter data in the literature, mainly for heavy elements, stress the importance of the proposed method.

scholarly journals Experimental stark widths and shifts of V II spectral lines

2020 ◽  
Vol 498 (2) ◽  
pp. 2068-2074 ◽  
Author(s):  
J Manrique ◽  
D M Díaz Pace ◽  
C Aragón ◽  
J A Aguilera
Keyword(s):  
Electron Density ◽  
Wavelength Range ◽  
Spectral Lines ◽  
Electron Density And Temperature ◽  
And Shifts

ABSTRACT We have measured the Stark widths and shifts of V II spectral lines in the wavelength range 2000–4200 Å belonging to 75 multiplets. The spectra are emitted by laser-induced plasmas generated from fused glass discs prepared by borate fusion. The electron density and temperature are in the ranges (0.72–6.5) × 1017 cm−3 and (11 000–14 900) K, respectively. To avoid self-absorption, we have used seven samples with vanadium concentrations selected by the CSigma graph methodology. This has allowed to include strong and weak lines in the study, including resonance and forbidden lines. The experimental widths and shifts are compared with theoretical values available in the literature.

scholarly journals Measurement of plasma electron temperature and density by using different applied voltages and working pressures in a magnetron sputtering system

2018 ◽  
Vol 7 (3) ◽  
pp. 1177 ◽  
Author(s):  
Sabah N. Mazhir ◽  
Mohammed K. Khalaf ◽  
Sarah K. Taha ◽  
Hussein K . Mohsin
Keyword(s):  
Magnetron Sputtering ◽  
Electron Temperature ◽  
Electron Density ◽  
Applied Voltage ◽  
Low Cost ◽  
Plasma Electron ◽  
Spectral Lines ◽  
Glow Discharge Plasma ◽  
Working Pressure ◽  
Sputtering System

This paper discusses applying different voltages and pressure in the presence of silver target and argon gas to produce plasma. Home-made dc magnetron sputtering system was used to produce glow discharge plasma. The distance between two electrodes is 4 cm. Gas used to produce plasma is argon that flows inside the chamber with flow rate 40 sccm. Intensity of spectral lines, electron temperature and electron density were studied. The results show that the intensity of spectral lines increases with the increase of the working pressure and applied voltage. Electron temperature increases by the increase of applied voltage but decreases with the increase of working pressure, while electron density decreases with the increase of applied voltage and increases with the increase of working pressure. This research demonstrates a new low cost approach to start producing high corrosion resistance materials.  

Stark Parameter Regularities of Multiply Charged Ion Spectral Lines Originating from the Same Transition Array

2008 ◽  
Vol 680 (1) ◽  
pp. 803-808 ◽  
Author(s):  
J. Purić ◽  
I. P. Dojčinović ◽  
M. Nikolić ◽  
M. Šćepanović ◽  
B. M. Obradović ◽  
...  
Keyword(s):  
Spectral Lines ◽  
Multiply Charged ◽  
Transition Array

scholarly journals Stark Width Regularities within Neutral Calcium Spectral Series

2012 ◽  
Vol 29 (1) ◽  
pp. 20-28 ◽  
Author(s):  
I. Tapalaga ◽  
I. P. Dojčinović ◽  
M. K. Milosavljević ◽  
J. Purić
Keyword(s):  
Term Structure ◽  
Low Temperatures ◽  
Spectral Lines ◽  
Spectral Series ◽  
Stark Broadening ◽  
Proton Impact ◽  
Transition Level ◽  
Lower Transition ◽  
Upper Level ◽  
Stark Width

AbstractDependences of electron and proton impact Stark width on the upper level ionization potential within different series of the neutral calcium spectral lines have been evaluated and discussed. The similar dependences previously found for the electron impact contribution were also obtained for the proton impact contribution to the Stark broadening. The emphasis is on the term structure influence on the studied Stark width dependences. The influence of the lower transition level and transition term is higher at low temperatures. After establishing these dependences, predictions were made for Stark widths of neutral calcium spectral lines not measured experimentally or calculated theoretically until now.

scholarly journals On the stark broadening of Os II spectral lines

2020 ◽  
Vol 10 (2) ◽  
pp. 65-70
Author(s):  
Milan Dimitrijević
Keyword(s):  
Electron Density ◽  
Spectral Lines ◽  
Half Maximum ◽  
Stark Broadening ◽  
Plasma Parameters ◽  
And Shifts

Stark broadening parameters, full widths at half maximum (FWHM) and shifts for 13 Os II lines have been calculated. The plasma parameters are: electron density of 1017 cm-3 and temperatures from 5 000 K to 80 000 K. Calculations have been performed with the simplified modified semiempirical (SMSE) approach. The results are also used for the consideration of Strak width and shift regularities within the Os II 6s6D-6p6Do multiplet.

scholarly journals Measurement of Stark Halfwidths of Spectral Lines of Ionized Oxygen and Silicon Emitted from T-tube Plasma

Atoms ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Lazar Gavanski
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Theoretical Models ◽  
Spectral Lines ◽  
Astrophysical Plasmas ◽  
T Tube ◽  
Experimental Values

The analysis of experimental Stark halfwidths of spectral lines of singly ionized oxygen and silicon and double ionized silicon is presented in this work. The considered spectral lines were emitted from plasma generated in an electromagnetically driven T-tube, with an electron temperature of 15,000 K and electron density of 1.45 × 1023 m−3. The obtained Stark halfwidths were compared to experimental values given by other authors. In addition, all experimental values were compared to theoretical values. These data are useful for diagnostics of laboratory and astrophysical plasmas as well as verifying theoretical models.

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