Monopole contribution to the Stark width of hydrogen-like spectral lines in plasmas

2021 ◽  
Author(s):  
Eugene Oks
Keyword(s):  
Spectral Lines ◽  
Stark Width

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 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.

Stark broadening of Co ii spectral lines in hot stars and white dwarf spectra

2020 ◽  
Vol 496 (4) ◽  
pp. 5584-5590 ◽  
Author(s):  
Zlatko Majlinger ◽  
Milan S Dimitrijević ◽  
Vladimir A Srećković
Keyword(s):  
White Dwarf ◽  
Empirical Method ◽  
Spectral Lines ◽  
Half Maximum ◽  
Stark Broadening ◽  
Hot Stars ◽  
Approximate Methods ◽  
Semi Empirical ◽  
Stark Width

ABSTRACT Stark full widths at half-maximum for 46 Co ii multiplets have been calculated using modified semi-empirical method. The obtained results have been used to demonstrate the importance of Stark broadening mechanism in DA and DB white dwarf and A star atmospheres. With the obtained results we also test possibility of using some approximate methods of Stark width calculations developed on the basis of regularities and systematic trends.

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 Measured, calculated and predicted Stark widths of the singly ionized C, N, O, F, Ne, Si, P, S, Cl and Ar spectral lines

2000 ◽  
pp. 15-23 ◽  
Author(s):  
S. Djenize
Keyword(s):  
Critical Analysis ◽  
Spectral Lines ◽  
Light Sources ◽  
Plasma Spectroscopy ◽  
First Time ◽  
Stark Width

In order to find reliable Stark width data, needed in plasma spectroscopy comparision between the existing measured, calculated and predicted Stark width values was performed for ten singly ionized emitters: C, N, O, F, Ne Si, P, S, Cl and Ar in the lower lying 3s - 3p, 3p - 3d and 4s - 4p transitions. These emitters are present in many cosmic light sources. On the basis of the agreement between mentioned values 17 spectral lines from six singly ionized spectra have been recommended, for the first time, for plasma spectroscopy as spectral lines with reliable Stark width data. Critical analysis of the existing Stark width data is also given.

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.

Stark width and shift of singly-ionized tin spectral lines

1990 ◽  
Vol 17 (2) ◽  
pp. 85-86 ◽  
Author(s):  
S. Djeniže ◽  
A. Srećković ◽  
J. Labat
Keyword(s):  
Spectral Lines ◽  
Stark Width

scholarly journals On the stark width regularities along the argon isonuclear sequence

1998 ◽  
pp. 25-29 ◽  
Author(s):  
S. Djenize ◽  
A. Sreckovic
Keyword(s):  
Spectral Lines ◽  
Astrophysical Interest ◽  
Stark Width

Recent values of the measured spectral lines Stark widths (since 1988) for neutral and ionized argon atoms, have been compared to the values previously predicted by us. These were found from the established regularities of the Stark widths along the argon isonuclear sequence for 4s-4p and 4s'-4p' types of transitions. Using new experimental Stark width values we have established trends for 4p-4d, 4p'-4d' and 4p-5s type of transitions which enables predictions of the Stark width values for the Ar III and Ar VIII spectral lines, that have not been calculated or measured before, but are of a considerable astrophysical interest.

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