scholarly journals Stark Broadening of Cr III Spectral Lines: DO White Dwarfs

Atoms ◽  
2018 ◽  
Vol 6 (2) ◽  
pp. 15 ◽  
Author(s):  
Milan Dimitrijević ◽  
Abhishek Chougule
Atoms ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 50 ◽  
Author(s):  
Eugene Oks

There is presented an overview of the latest advances in the analytical theory of Stark broadening of hydrogenic spectral lines in various types of laboratory and astrophysical plasmas. They include: (1) advanced analytical treatment of the Stark broadening of hydrogenic spectral lines by plasma electrons; (2) center-of-mass effects for hydrogen atoms in a nonuniform electric field: applications to magnetic fusion, radiofrequency discharges, and flare stars; (3) penetrating-ions-caused shift of hydrogenic spectral lines in plasmas; (4) improvement of the method for measuring the electron density based on the asymmetry of hydrogenic spectral lines in dense plasmas; (5) Lorentz–Doppler broadening of hydrogen/deuterium spectral lines: analytical solution for any angle of observation and any magnetic field strength, and its applications to magnetic fusion and solar physics; (6) Revision of the Inglis-Teller diagnostic method; (7) Stark broadening of hydrogen/deuterium spectral lines by a relativistic electron beam: analytical results and applications to magnetic fusion; (8) Influence of magnetic-field-caused modifications of the trajectories of plasma electrons on shifts and relative intensities of Zeeman components of hydrogen/deuterium spectral lines: applications to magnetic fusion and white dwarfs; (9) Influence of magnetic-field-caused modifications of trajectories of plasma electrons on the width of hydrogen/deuterium spectral lines: applications to white dwarfs; (10) Stark broadening of hydrogen lines in plasmas of electron densities up to or more than Ne~1020 cm−3; and, (11) The shape of spectral lines of two-electron Rydberg atoms/ions: a peculiar Stark broadening.


2011 ◽  
Vol 20 (4) ◽  
Author(s):  
Z. Simić ◽  
M. S. Dimitrijević ◽  
A. Kovačević ◽  
S. Sahal-Bréchot

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.


Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 29
Author(s):  
Sylvie Sahal-Bréchot

The present paper revisits the determination of the semi-classical limit of the Feshbach resonances which play a role in electron impact broadening (the so-called “Stark“ broadening) of isolated spectral lines of ionized atoms. The Gailitis approximation will be used. A few examples of results will be provided, showing the importance of the role of the Feshbach resonances.


2016 ◽  
Vol 460 (2) ◽  
pp. 1658-1663 ◽  
Author(s):  
Milan S. Dimitrijević ◽  
Magdalena Christova ◽  
Zoran Simić ◽  
Andjelka Kovačević ◽  
Sylvie Sahal-Bréchot

1999 ◽  
Vol 59 (5) ◽  
pp. 374-378 ◽  
Author(s):  
B Blagojević ◽  
M V Popović ◽  
N Konjević

2021 ◽  
Vol 75 (8) ◽  
Author(s):  
Abeer Almodlej ◽  
Nabil Ben Nessib ◽  
Milan S. Dimitrijević

2000 ◽  
pp. 57-90 ◽  
Author(s):  
M.S. Dimitrijevic ◽  
S. Sahal-Brechot

Electron-, proton-, and ionized helium-impact broadening parameter tables for In II spectral lines, are presented as a function of the temperature and the perturber density. Calculations have been performed within the semiclassical perturbation approach.


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