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 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 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 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.

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.

The spark spectra of zinc. II. Zinc III

1968 ◽  
Vol 46 (11) ◽  
pp. 1291-1302 ◽  
Author(s):  
K. A. Dick
Keyword(s):  
Ionization Potential ◽  
Vacuum Ultraviolet ◽  
Energy Levels ◽  
Atomic Energy ◽  
Spectral Lines ◽  
A Value ◽  
Atomic Energy Levels

The energy levels of zinc III have been revised and extended as a result of improved wavelengths of the spectral lines, particularly those in the vacuum ultraviolet. Of the 70 levels listed in Atomic Energy Levels (Moore 1952), 37 have been retained in the present analysis, although the designations of 14 of these have been changed. An additional 233 levels are established. The new scheme results in 1279 line classifications in the region from λ 383 Å to λ 6270 Å. A value of 320 390 cm−1 is given for the ionization potential of Zn III.

Die Druckverbreiterung der diffusen Heliumlinien, Vergleich zwischen Messung und Theorie im quasistatischen Bereich

1966 ◽  
Vol 21 (6) ◽  
pp. 697-718 ◽  
Author(s):  
H. Pfennig ◽  
E. Trefftz
Keyword(s):  
Stark Effect ◽  
Point Of View ◽  
Spectral Lines ◽  
Experimental Point ◽  
Line Profiles ◽  
Experimental Conditions ◽  
Part D ◽  
Upper Level ◽  
Good Agreement ◽  
Red Wing

It is difficult to discriminate between theories of pressure broadening of spectral lines through comparison with experiments. Line profiles are insensitive with respect to details of the theory, and it is difficult to keep experimental conditions clear and certain enough to make the comparison relevant. We used measurements of VIDAL 1 which are satisfactory from the experimental point of view. The wings of the diffuse He-lines 2P — nD are compared with those calculated by quasistatic theory. Part B deals with STARK effect splitting of the upper level. Part C describes the quasistatic theory of the line wings, and discusses the probability function of the so called micro field strength. In part D the results of the calculation are compared with the measurements. The comparison is relevant only for the violet wings of the triplet series. The red wing of the triplet lines and the violet wing of the singlet lines are disturbed by the forbidden component 2P — nP. The red wing of singlet lines is experimentally too inexact because of disturbing wings of neighboring triplet lines. The slope of the violet side of the triplet wings shows good agreement between theory and measurement for the far wing (large Δv). For decreasing Δv the experimental curve stays below the theoretical curve. For comparison of wing intensities it proves to be important to normalize the line profiles. It is seen that the measured height of the wings increases less with increasing main quantum number than the theoretical height.

Stark width and shift dependence on the ionization potential

1980 ◽  
Vol 76 (2) ◽  
pp. 128-130 ◽  
Author(s):  
J. Purić ◽  
I. Lakićević ◽  
V. Glavonjić
Keyword(s):  
Ionization Potential ◽  
Stark Width

scholarly journals Stellar population astrophysics (SPA) with the TNG

2019 ◽  
Vol 631 ◽  
pp. L3 ◽  
Author(s):  
N. Ryde ◽  
H. Hartman ◽  
E. Oliva ◽  
L. Origlia ◽  
N. Sanna ◽  
...  
Keyword(s):  
Near Infrared ◽  
Laboratory Data ◽  
Spectral Feature ◽  
Spectral Lines ◽  
Atomic Data ◽  
Solar Intensity ◽  
Original Laboratory ◽  
Fine Splitting ◽  
Upper Level ◽  
Vacuum Correction

Context. In the advent of new infrared high-resolution spectrometers, accurate and precise atomic data in the infrared are urgently needed. Identifications, wavelengths, strengths, broadening, and hyper-fine splitting parameters of stellar lines in the near-infrared are in many cases not accurate enough to model observed spectra, and in other cases, these parameters do not even exist. Some stellar features are unidentified. Aims. The aim with this work is to identify a spectral feature at λvac = 1063.891 nm or λair = 1063.600 nm that is visible in spectra of stars of different spectral types that are observed with the GIANO-B spectrometer. Methods. The search for spectral lines to match the unidentified feature in line lists from standard atomic databases was not successful. However, by investigating the original published laboratory data, we were able to identify the feature and solve the problem. To confirm its identification, we modelled the presumed stellar line in the solar intensity spectrum and found an excellent match. Results. We find that the observed spectral feature is a stellar line originating from the 4s′–4p′ transition in S I, and that the reason for its absence in atomic line databases is a neglected air-to-vacuum correction in the original laboratory measurements from 1967 for this line only. From interpolation we determine the laboratory wavelength of the S I line to be λvac = 1063.8908 nm or λair = 1063.5993 nm, and the excitation energy of the upper level to be 9.74978 eV.

Sign in / Sign up

Export Citation Format

Share Document