111 research outputs found
Chemi-ionization in Solar Photosphere: Influence on the Hydrogen Atom excited States Population
In this paper, the influence of chemi-ionization processes in collisions, as well as the influence of inverse chemi-recombination
processes on hydrogen atom excited-state populations in solar photosphere, are
compared with the influence of concurrent electron-atom and electron-ion
ionization and recombination processes. It has been found that the considered
chemi-ionization/recombination processes dominate over the relevant concurrent
processes in almost the whole solar photosphere. Thus, it is shown that these
processes and their importance for the non-LTE modeling of the solar atmosphere
should be investigated further
Electrical conductivity of plasmas of DB white dwarf atmospheres
The static electrical conductivity of non-ideal, dense, partially ionized
helium plasma was calculated over a wide range of plasma parameters:
temperatures and mass density . Calculations of
electrical conductivity of plasma for the considered range of plasma parameters
are of interest for DB white dwarf atmospheres with effective temperatures
.
Electrical conductivity of plasma was calculated by using the modified random
phase approximation and semiclassical method, adapted for the case of dense,
partially ionized plasma. The results were compared with the unique existing
experimental data, including the results related to the region of dense
plasmas. In spite of low accuracy of the experimental data, the existing
agreement with them indicates that results obtained in this paper are correct
Modeling of the Continuous Absorption of Electromagnetic Radiation in Dense Hydrogen Plasma
In this work is examined a new modeling way of describing the continuous
absorption of electromagnetic (EM) radiation in a dense partially ionized
hydrogen plasmas with electron densities about cm -
cm and temperatures about K - K in the wavelength region . The obtained results can be applied to the plasmas of the
partially ionized layers of different stellar atmospheres
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