scholarly journals Stark Width Regularities within Beryllium Spectral Series

2011 ◽  
Vol 28 (4) ◽  
pp. 281-289 ◽  
Author(s):  
I. P. Dojčinović ◽  
I. Tapalaga ◽  
J. Purić
Keyword(s):  
Fine Structure ◽  
Ionization Potential ◽  
Electron Impact ◽  
Spectral Lines ◽  
Spectral Series ◽  
Stark Broadening ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Upper Level ◽  
Stark Width

AbstractThe dependences of Stark width on the upper-level ionization potential within different series of the neutral beryllium spectral lines have been studied. The dependences previously observed for electron impact contribution to the Stark widths were also obtained for the proton impact contribution. The emphasis is on the fine structure influence on the studied Stark parameter dependences. The influence of temperature on the dependences of Stark width parameters has been demonstrated. The relations found can be used in both cases for prediction of new Stark broadening data, thus avoiding much more complicated procedures.

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 Be II Spectral Lines

Data ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 106
Author(s):  
Milan S. Dimitrijević ◽  
Magdalena Christova ◽  
Sylvie Sahal-Bréchot
Keyword(s):  
Perturbation Theory ◽  
Plasma Diagnostics ◽  
Spectral Lines ◽  
Spectral Series ◽  
Stark Broadening ◽  
Stark Width

Calculated Stark broadening parameters of singly ionized beryllium spectral lines have been reported. Three spectral series have been studied within semiclassical perturbation theory. The plasma conditions cover temperatures from 2500 to 50,000 K and perturber densities 1011 cm−3 and 1013 cm−3. The influence of the temperature and the role of the perturbers (electrons, protons and He+ ions) on the Stark width and shift have been discussed. Results could be useful for plasma diagnostics in astrophysics, laboratory, and industrial plasmas.

scholarly journals On the stark width regularities in the singly ionized argon spectrum

1999 ◽  
pp. 5-9
Author(s):  
S. Djenize
Keyword(s):  
Ionization Potential ◽  
Critical Analysis ◽  
Quantum Transition ◽  
Spectral Lines ◽  
Upper Level ◽  
Stark Width

The existence of the Stark width dependence on the upper-level ionization potential of the quantum transition have been presented for the four types of transitions (4s? - 4p?, 4p? - 4d?, 4p - 5s, 3d - 4p?) in the singly ionized argon spectrum (Ar II). On the basis of established regularities the Stark width values for 6 spectral lines, not measured or calculated before, have been predicted. Critical analysis of the existing experimental Stark width data are, also, given.

scholarly journals Stark Widths Regularities Within: ns-np, np-ns, np-nd, nd-np and nd-nf Spectral Series of Potassium Isoelectronic Sequence

Atoms ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 99
Author(s):  
Nora Trklja ◽  
Ivan P. Dojčinović ◽  
Irinel Tapalaga ◽  
Jagoš Purić
Keyword(s):  
Experimental Data ◽  
Data Processing ◽  
Ionization Potential ◽  
Electron Density ◽  
Spectral Series ◽  
Isoelectronic Sequence ◽  
Electron Density And Temperature ◽  
Upper Level ◽  
Stark Width

Results presented in this paper show a regular behaviour of Stark widths within the studied spectral series of potassium isoelectronic sequence. These regularities have been found and verified on the basis of the existing theoretical and experimental data being normalized for the same plasma conditions (chosen electron density and temperature). Using the available set of data the corresponding formulas expressing the Stark widths of the lines originated from the spectral series studied here as a function of the upper-level ionization potential and the rest core charge of the emitter seeing by the electron undergoing transition, are obtained here. Well established and verified dependence is used to calculate Stark width data needed but not available so far. For the purposes of the operation with a large number of data, algorithms for the analysis of Stark width dependence on temperature and electron density and for the investigation of the assumed correlation between Stark width and ionization potential of the upper level of analyzed transition, have been made. Developed algorithms enable fast data processing.

scholarly journals The Semiclassical Limit of the Gailitis Formula Applied to Electron Impact Broadening of Spectral Lines of Ionized Atoms

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 29
Author(s):  
Sylvie Sahal-Bréchot
Keyword(s):  
Electron Impact ◽  
Classical Limit ◽  
Semiclassical Limit ◽  
Spectral Lines ◽  
Stark Broadening ◽  
Feshbach Resonances

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.

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.

Stark broadening of hydrogen spectral lines with fine structure effects

2004 ◽  
Vol 28 (1) ◽  
pp. 119-124 ◽  
Author(s):  
B. Grabowski ◽  
W. Olchawa ◽  
R. Olchawa
Keyword(s):  
Fine Structure ◽  
Spectral Lines ◽  
Stark Broadening

ELECTRON-IMPACT STARK BROADENING PARAMETERS FOR Ti II AND Ti III SPECTRAL LINES

2001 ◽  
Vol 77 (2) ◽  
pp. 277-310 ◽  
Author(s):  
DRAGANA TANKOSIĆ ◽  
LUKA Č. POPOVIĆ ◽  
MILAN S. DIMITRIJEVIĆ
Keyword(s):  
Electron Impact ◽  
Spectral Lines ◽  
Stark Broadening
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