Results 251 to 260 of about 92,694 (289)

Investigation of the Stark Broadening of Balmer Beta

Journal of Physics B: Atomic and Molecular Physics, 1981
The Stark broadening of the Balmer line Hbeta was studied in a high-current wall-stabilised arc at electron densities between 1.75 and 14.4*1016 cm-3. The electron density was obtained by means of a two-wavelength Michelson interferometer. The reduced half-widths of Hbeta were compared with the theories of Griem et al. (1962), Vidal et al. (1973) and
V Helbig, K -P Nick
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Stark broadening of neutral xenon

Physical Review A, 1981
Stark broadening of prominent visible Xe I lines are measured in three independent experiments. The three studies all use quiescent shock-tube plasmas as emission sources, but each employs distinctly different instrumentation, shock-heating regimes, and analytical methods. Owing to conditions in the light sources, temperatures between 9200 and 12 500 K,
null Truong-Bach, J. Richou, A. Lesage, M. H. Miller   +3 more
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Stark broadening of He i lines

AIP Conference Proceedings, 1994
Close-coupling methods for electron impact broadening have been extended to the Stark broadening of neutral helium lines. The comparison with semiclassical impact theories reveals significant differences, particularly at low electron temperatures. Ion broadening is included by the use of the model microfield method.
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Stark broadening of resonance transitions in B III

Physical Review A, 1996
We performed line profile measurements of the 2s-2p resonance transitions in B III in order to test quantum-mechanical (close-coupling) theory. The experiment was carried out using the well-diagnosed gas-liner pinch discharge where plasma parameters are determined independently by 90\ifmmode^\circ\else\textdegree\fi{} Thomson scattering.
, Glenzer, , Kunze
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Dynamic Stark broadening as the Dicke narrowing effect

Physical Review E, 2010
A very fast method to account for charged particle dynamics effects in calculations of spectral line shape emitted by plasmas is presented. This method is based on a formulation of the frequency fluctuation model (FFM), which provides an expression of the dynamic line shape as a functional of the static distribution of frequencies.
Calisti, Annette, Mossé, Caroline, Ferri, Sandrine, Talin, Bernard, Rosmej, Frank, Bureyeva, L.A., Lisitsa, Valery   +6 more
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Electron correlations in stark broadening

Journal of Quantitative Spectroscopy and Radiative Transfer, 1969
Abstract It is shown that the previous calculations of electron correlation effects in Stark broadening are in error because of an incorrect evaluation of the electric field autocorrelation function. The corrected result involves the screening of both fields in the autocorrelation function.
W.R. Chappell, J. Cooper, E.W. Smith
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On the Stark broadening of Lyman-β

Journal of Quantitative Spectroscopy and Radiative Transfer, 1972
Abstract Classical-path calculations for the Stark broadening of the Lyman-β line of hydrogen are presented using a procedure outlined in a previous paper. All multipoles in the perturber (free electron)—atom interaction are included and time ordering of the operators in the S-matrices is retained. Comparison is made with previous calculations.
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On the Stark Broadening of Lu III Spectral Lines

Journal of Astrophysics and Astronomy, 2015
The electron-impact widths for 27 Lu III spectral lines have been calculated by using the modified semiempirical method. Calculations have been also performed with the published relativistic Hartree-Fock oscillator strengths and additionally, with the approximate formula of Cowley.
Majlinger, Zlatko, Simić, Zoran, Dimitrijević, Milan   +2 more
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Accuracy of Stark Broadening Calculations for Ionic Emitters

Physical Review Letters, 1998
The standard static-ion impact electron theory of line broadening is assessed with a calculation of the He II P-alpha line over a broad range of plasma conditions. Ion dynamics, an improved electron collision operator, and accurate atomic physics are included in the computation.
Godbert-Mouret, L, Meftah, T, Calisti, Annette, Stamm, R, Talin, B, Gigosos, M, Cardenoso, V, Alexiou, S, Lee, Rw, Klein, L   +9 more
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Stark Broadening of Neutral Helium Lines in a Plasma

Physical Review, 1962
The frequency distributions of spectral lines of nonhydrogenic atoms broadened by local fields of both electrons and ions in a plasma are calculated in the classical path approximation. The electron collisions are treated by an impact theory which takes into account deviations from adiabaticity.
Griem, H. R., Baranger, M., Kolb, A. C., Oertel, G.   +3 more
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