Results 21 to 30 of about 892,415 (299)
Open Astronomy, 2011 The chemi-ionization processes in atom - Rydberg atom collisions, as well as the corresponding chemi-recombination processes, are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The
Mihajlov Anatolij A. +3 more
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Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling
International Journal of Chemical Engineering, 2012 This paper describes the CFD modelling of a reactor operating in the nuclear industry using LES approach. The reactor consists of an unbaffled stirred tank reactor in which plutonium precipitation reactions are carried out.
Murielle Bertrand +4 more
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Stark Broadening of Neutral Boron Lines
Atoms, 2019 Stark broadening parameters, width and shift, of lines within B I 2s22p−2s2ns spectral series have been calculated. Semi-classical theory in impact approximation has been applied. Temperature dependence of Stark parameters has been studied.
Magdalena Christova +2 more
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Atomic site sensitive processes in low energy ion-dimer collisions [PDF]
, 2014 Electron capture processes for low energy Ar9+ ions colliding on Ar2 dimer targets are investigated, focusing attention on charge sharing as a function of molecule orientation and impact parameter.
Cassimi, A. +11 more
core +4 more sources
AtomsA Q-switched Nd:YAG laser was focused on the Pb–Ti alloy samples in several laser-induced breakdown experiments in order to measure the Stark parameters of several spectral lines (58) of singly ionized titanium, including the 3504.89 Å and 3510.83 Å ...
Lucía Isidoro-García +4 more
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Stark Broadening of Al IV Spectral Lines
Universe, 2023 Stark widths for 23 transitions in Al IV have been calculated by employing the modified semiempirical method. The results are obtained for an electron density of 1017 cm−3 and temperatures from 10,000 K to 160,000 K.
Milan S. Dimitrijević +1 more
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Accurate abundance analysis of late-type stars: advances in atomic physics
, 2016 The measurement of stellar properties such as chemical compositions, masses and ages, through stellar spectra, is a fundamental problem in astrophysics.
Barklem, Paul S.
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Theoretical investigation of transition data of astrophysical importance in neutral sulphur
Astronomy & AstrophysicsAccurate and comprehensive atomic data are essential for the modelling of stellar spectra. Uncertainties in the oscillator strengths of specific lines used for abundance analyses directly translate into uncertainties in the derived elemental abundances ...
Li W., Amarsi A. M., Jönsson P.
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On mutual neutralization process in collisions of magnesium with hydrogen isotopes
Physics of Complex Systems, 2023 Cross sections for mutual neutralization processes in magnesium-deuterium collisions are calculated in the collision energy range 0.001–100 eV by the probability current method.
Ярослав Владимирович Воронов +1 more
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Ionization equilibrium of nitrogen under kappa electron distributions
Astronomy & AstrophysicsNon-Maxwellian electron energy distributions, such as kappa distributions, have been proposed to explain discrepancies in observed astrophysical plasmas. We employed the coronal approximation to study the level populations of ionized nitrogen under kappa
Song Yunliang, Li Bowen, Chen Ximeng
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