Results 21 to 30 of about 6,236,563 (298)
CS LINE PROFILES IN HOT CORES [PDF]
The Astrophysical Journal, 2011 We present a theoretical study of CS line profiles in archetypal hot cores. We provide estimates of line fluxes from the CS(1-0) to the CS(15-14) transitions and present the temporal variation of these fluxes. We find that \textit{i)} the CS(1-0) transition is a better tracer of the Envelope of the hot core whereas the higher-J CS lines trace the ultra-
Bayet, E., Yates, J., Viti, S.
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Stark Broadening of Several Ar I Spectral Lines in the Visible Spectrum
Open Astronomy, 2011 In order to complete data on Stark broadening parameters for Ar I line in the visible spectrum, we determined Stark widths and shifts due to electron, proton and ionized helium impacts for nine lines (4191.0, 4259.4, 5912.1, 6043.2, 6045.0, 6752.9, 7503 ...
Dimitrijević Milan S. +3 more
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NLTE Analysis of High-Resolution H-Band Spectra, V: Neutral Sodium
Universe, 2023 In order to derive sodium abundances and investigate the effects of non-local thermodynamic equilibrium (NLTE) on the formation of H-band Na I lines, we update the sodium atomic model by incorporating collision rates with hydrogen from new quantum ...
Zeming Zhou +6 more
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Stark Widths of Yb III and Lu IV Spectral Lines
Atoms, 2019 Rare Earth Elements are important for stellar atmosphere analysis but the corresponding Stark broadening data are scarce. For Yb III and Lu IV theoretical as well as experimental data on Stark broadening parameters of spectral lines are absent in the ...
Milan S. Dimitrijević
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Spectral line profile of turbulent gas [PDF]
Applied Optics, 1986 A simple theoretical model is proposed to determine the spectral line profile of a turbulent gas. It is shown that the spectral line profile of a turbulent gas is still a Voigt profile. Its Lorentzian component is hardly influenced by the turbulent motion.
G, Zhi, J, Qian
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Characterization of defect structures in nanocrystalline materials by X-ray line profile analysis [PDF]
, 2007 X-ray line profile analysis is a powerful alternative tool for determining dislocation densities, dislocation type, crystallite and subgrain size and size-distributions, and planar defects, especially the frequency of twin boundaries and stacking faults.
Tamás Ungár +3 more
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On the stark broadening of Os II spectral lines [PDF]
Bulletin of Natural Sciences Research, 2020 Stark broadening parameters, full widths at half maximum (FWHM) and shifts for 13 Os II lines have been calculated. The plasma parameters are: electron density of 1017 cm-3 and temperatures from 5 000 K to 80 000 K.
Dimitrijević Milan S.
doaj
Line profiles in expanding atmospheres [PDF]
Symposium - International Astronomical Union, 1994 The analysis of the UV resonance transitions of superionized species observed in early-type stars suggests the presence of a high temperature region and an outward flow of matter (Snow & Marlborough 1976).
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Stark Broadening and White Dwarfs
Open Astronomy, 2011 White dwarf and pre-white dwarfs are the best types of stars for the application of Stark broadening research results in astrophysics, since in the atmospheres of these stars physical conditions are very favorable for this line broadening mechanism - in ...
Dimitrijević Milan S. +3 more
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Electron energy-loss spectroscopy of autoionizing states of zinc [PDF]
Serbian Astronomical Journal, 2004 Autoionizing energy-loss spectra of Zn from 10.8 to 12.5 eV, for incident electron energies between 20 and 100 eV, have been recorded at scattering angles from 0° to 10°.
Predojević B. +4 more
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