scholarly journals Stark Widths of Yb III and Lu IV Spectral Lines

Atoms ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 10
Author(s):  
Milan Dimitrijević
Keyword(s):  
Experimental Data ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Data Center ◽  
Semiempirical Method ◽  
Molecular Data ◽  
Stellar Atmosphere ◽  
Spectral Lines ◽  
Stark Broadening ◽  
Isoelectronic Sequence

Rare Earth Elements are important for stellar atmosphere analysis but the corresponding Stark broadening data are scarce. For Yb III and Lu IV theoretical as well as experimental data on Stark broadening parameters of spectral lines are absent in the literature. Using the modified semiempirical method of Dimitrijević and Konjević, we determined Stark widths for four Yb III and four Lu IV transitions, belonging to the erbium isoelectronic sequence. The obtained results are also used to discuss similarities between homologous transitions in the erbium isoelectronic sequence. We note as well that calculated widths will be implemented in the STARK-B database which is also a part of the Virtual Atomic and Molecular Data Center.

scholarly journals Stark Broadening of In III Lines in Astrophysical and Laboratory Plasma

2011 ◽  
Vol 20 (4) ◽  
Author(s):  
Z. Simić ◽  
M. S. Dimitrijević ◽  
A. Kovačević ◽  
S. Sahal-Bréchot
Keyword(s):  
Experimental Data ◽  
Perturbation Method ◽  
Data Center ◽  
White Dwarfs ◽  
Charged Particles ◽  
Molecular Data ◽  
Spectral Lines ◽  
Virtual Observatory ◽  
Stark Broadening ◽  
Laboratory Plasma

AbstractIn the deeper layers of hot stellar photospheres the Stark widths of spectral lines can be comparable and even larger than the thermal Doppler widths. Using the semiclassical perturbation method, we investigate the influence of the collisions with charged particles for the In III lines. We determine a number of Stark broadening parameters important in the atmospheres of A-type stars and white dwarfs. Also, the obtained results are compared with the available experimental data. The results will be included in the STARK-B database, the Virtual Atomic and Molecular Data Center and the Serbian Virtual Observatory.

scholarly journals Stark Broadening of Several Ar I Spectral Lines in the Visible Spectrum

2011 ◽  
Vol 20 (4) ◽  
Author(s):  
Milan S. Dimitrijević ◽  
Andjelka Kovačević ◽  
Zoran Simić ◽  
Sylvie Sahal-Bréchot
Keyword(s):  
Perturbation Theory ◽  
Data Center ◽  
Visible Spectrum ◽  
Molecular Data ◽  
Complete Data ◽  
Spectral Lines ◽  
Stark Broadening ◽  
And Shifts

AbstractIn order to complete data on Stark broadening parameters for Ar I line in the visible spectrum, we determined Stark widths and shifts due to electron, proton and ionized helium impacts for nine lines (4191.0, 4259.4, 5912.1, 6043.2, 6045.0, 6752.9, 7503.9, 7514.6, 7724.2 Å), using jK coupling and semiclassical perturbation theory. The obtained results will enter the STARK-B database, which is a part of the Virtual Atomic and Molecular Data Center.

scholarly journals Stark broadening data for spectral lines of rare-earth elements: Nb III

2014 ◽  
Vol 54 (7) ◽  
pp. 1231-1234 ◽  
Author(s):  
Zoran Simić ◽  
Milan S. Dimitrijević ◽  
Luka Č. Popović
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Spectral Lines ◽  
Stark Broadening

scholarly journals Stark Broadening of Several Ne II, Ne III and O III Spectral Lines for the Stark-B Database

2011 ◽  
Vol 20 (4) ◽  
Author(s):  
Milan S. Dimitrijević ◽  
Andjelka Kovačević ◽  
Zoran Simić ◽  
Sylvie Sahal-Bréchot
Keyword(s):  
Data Center ◽  
Molecular Data ◽  
Stellar Atmospheres ◽  
Spectral Lines ◽  
Stark Broadening ◽  
Visible Part

AbstractIn order to complete Stark broadening data for Ne II and O III lines, needed for analysis of stellar atmospheres, we determined the missing parameters for the broadening by collisions with protons and ionized helium for 15 Ne II and 5 O III multiplets. Also, electron, proton and ionized helium impact broadening parameters for an important Ne II multiplet in the visible part of the spectrum and for three Ne III multiplets were calculated. The obtained data will be included in the STARK-B database, which is a part of the Virtual Atomic and Molecular Data Center.

Stark broadening of spectral lines along the isoelectronic sequence of Li

1992 ◽  
Vol 45 (12) ◽  
pp. 8795-8802 ◽  
Author(s):  
S. Glenzer ◽  
N. I. Uzelac ◽  
H.-J. Kunze
Keyword(s):  
Spectral Lines ◽  
Stark Broadening ◽  
Isoelectronic Sequence

scholarly journals Upconversion nanoparticles based on rare-earth elements

2019 ◽  
Vol 220 ◽  
pp. 03033
Author(s):  
Dmitrii Zharkov ◽  
Andrey Leontyev ◽  
Artemii Smelev ◽  
Victor Nikiforov ◽  
Vladimir Lobkov ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Rare Earth ◽  
Laser Radiation ◽  
Rare Earth Elements ◽  
Hydrothermal Method ◽  
Water Soluble ◽  
Upconversion Nanoparticles ◽  
Biological Applications ◽  
Intense Luminescence

Using the hydrothermal method, we synthesized water soluble YVO4: Yb, Er nanoparticles with a size less than 10 nm. Nanoparticles exhibit intense luminescence in the green region due to Er3+ ions when excited by laser radiation at a wavelength of 980 nm as a result of the up-conversion process. Bright and stable luminescence also persists in an aqueous solution of nanoparticles. Based on experimental data, it can be argued that the objects obtained are promising in biological applications, as well as up-conversion phosphors.

The electron-impact broadening of the Nb iii for 5p–5d transitions

2019 ◽  
Vol 491 (3) ◽  
pp. 4382-4386
Author(s):  
Zoran Simić ◽  
Nenad M Sakan
Keyword(s):  
Rare Earth ◽  
Electron Impact ◽  
Rare Earth Element ◽  
Earth Element ◽  
Empirical Method ◽  
Spectral Lines ◽  
Type Star ◽  
Stark Broadening ◽  
Hot Stars ◽  
Semi Empirical

ABSTRACT In this work, we present the data of Stark widths of rare-earth element Nb iii, calculated for 21 spectral lines by using the modified semi-empirical method. Obtained results have been used to study the influence of Stark broadening on spectral lines in hot stars atmospheres such as A-type star and DA and DB white dwarfs.

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