Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.inasan.rssi.ru/~shematov/HotAtoms.html
Дата изменения: Tue Apr 6 19:07:04 2010 Дата индексирования: Wed Jan 30 01:14:27 2013 Кодировка: Windows-1251 Поисковые слова: п п п п п п п п п п п п п п п п |
Suprathermal particles in the planetary atmospheres
A non-equilibrium state of the atmospheric multi-component gas as an open thermodynamical system is triggered and maintained by the incident solar EUV and corpuscular radiation, with the involvement of successive collisional relaxation and numerous chemical reactions responsible for the system evolution. The original photolytic and energetic electron impact processes of interaction and the physical and chemical evolutionary processes can be described by a set of nonlinear Boltzmann type equations with the source term. Instead of a direct solution of these equations facing many obstacles, a special technique of stochastic simulation and Monte-Carlo algorithms were used for the numerical computer evaluation of such a system. This powerful technique allowed to study in detail the non-equilibrium state of the rarefied atmospheric gas at both microscopic (molecular) and macroscopic (continuum) levels and, in particular, to estimate the input of nonthermal particles into the composition, energetics, and dynamics of the planetary upper atmospheres. The main objectives were to reveal specific effects of the processes of non-equilibrium kinetics in terms of their domain and/or significant contribution to the macroscopic state of the atmospheric system. These included:
-the detailed quantitative study of the
kinetics of photolysis and energetic electron impacts involving estimates of
the dissociation and ionization production rates and formation of molecules and
atoms in different states of excitation:
Numerical stochastic simulation of kinetics of atmospheric
photochemistry.
In:
Marov M. (Ed.) Mathematical problems of applied aeronomy, 1987, Keldysh
Inst. of Applied Math., Moscow, 199-209, (in Russian).
-the multichannel
processes of the formation, collisional relaxation, and transport of the
"hot" particles of photochemical origin (superthermal
H, C, N, and O) leading to the formation of hot planetary coronas:
Kinetic approach to the mathematical modelling of collisional physical and chemical processes in planetary atmospheres (abstract).
In: Rarefied gas dynamics;
Proceedings of the 17th International Symposium,
1991,
Numerical kinetic simulation of the upper atmosphere photochemistry and dynamics (abstract).
Advances Space Res., 1992, 12,
303.
Superthermal particles in the planetary atmosphere.
In:
Massevitch A.G. (Ed.) Non-stable processes in the
Universe,
Nonequilibrium
processes in the planetary and cometary atmospheres. A kinetic approach to modeling.
Space Science Reviews, 1996, 76, Nos. 1/2, 1-202.
Nonequilibrium
processes in the planetary and cometary atmospheres:
Theory and Applications.
1997, Kluwer Academic Publishers,
Kinetics of suprathermal atoms and
molecules in the rarefied planetary atmospheres.
In:
RARIFIED
GAS DYNAMICS:
Proceedings of the 26th International Symposium on Rarefied Gas
Dynamics.
AIP Conference Proceedings, Volume 1084, pp.1047-1054, 2008.
Earth:
-the photochemistry of odd-nitrogen and its influence on the composition
of the lower thermosphere of the Earth:
Non-thermal nitrogen atoms in the
earth's thermosphere. I - Kinetics of hot N(4S) (abstract).
Geophysical Research Letters, 1991, 18, 1691.
Non-thermal nitrogen atoms in the
earth's thermosphere. II - A source of nitric oxide (abstract).
Geophysical Research Letters, 1991,18,
1695.
The
thermospheric odd nitrogen photochemistry
: role of non-thermal N(4S) atoms (abstract).
Ann. Geophys., 1992, 10, 792.