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Radio Occultation Experiment for Probing Planetary Ionospheres [PDF]
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019 Radio occultation (RO) is an important measurement technique for studying planetary atmospheres. It is based on the measurement of the frequency shift of the received radio signal from the spacecraft, caused by the bending of radio waves in the atmosphere.
J. P. Pabari, Varun Sheel
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Persistence of Planetary Waves in the Lower Ionosphere
Studia Geophysica et Geodaetica, 2003The transient planetary waves in the atmosphere and ionosphere seem to occur in the form of bursts of a couple of waves with limited persistence. To study persistence of planetary wave events in the lower ionosphere, data from two radio paths from Central Europe are used, Luxembourg – Panska Ves (f = 6.09 MHz, f eq = 2.1-2.2 MHz) and Deutschlandfunk ...
Dagmar Novotná +2 more
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Physics of Planetary Ionospheres
1973The fundamental physical and chemical processes in an idealized planetary ionosphere are considered as a general abstraction, with actual planetary ionospheres representing special cases. After describing the structure of the neutral atmospheres (the barosphere, the thermosphere, and the exosphere) and noting the principal ionizing radiations ...
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Doubly-charged ions in the planetary ionospheres: a review
Physical Chemistry Chemical Physics, 2011This paper presents a review of the current knowledge on the doubly-charged atomic and molecular positive ions in the planetary atmospheres of the Solar System. It is focused on the terrestrial planets which have a dense atmosphere of N(2) or CO(2), i.e.
Odile Dutuit +6 more
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Ionospheric Irregularities Initiated by Planetary Waves
Cosmic Research, 2001The nonstationary process of the accumulation of ions of meteoric origin, which is caused by propagation of planetary waves at altitudes of the lower ionosphere, is considered. Based on horizontal and vertical ion drift in planetary waves, a possibility of plasma density increases by a factor of 10–20 in comparison with the background concentration is ...
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Models of Planetary Ionospheres
1973The distribution of charged particles (electrons and ions) in a planetary ionosphere is governed by the equation of continuity $$\frac{{\partial N}}{{\partial t}} = q - L(N) - \nabla \cdot (Nv)$$ (6-1) A steady state situation (∂N/∂t = 0) can often be assumed, except near sunrise and sunset or during other rapidly varying situations such as a
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Thermal Structure of Planetary Ionospheres
1973Electrons released in the photoionization process due to the absorption of solar XUV radiation in planetary atmospheres may have initially kinetic energies of one to 100 eV. The energy E of photoelectrons resulting from photons of energy h v interacting with an atmospheric constituent whose ionization potential is IP is given by $$E = hv - IP ...
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Observed Properties of Planetary Ionospheres
1973Information on the ionosphere of Earth has accumulated for the past four decades. Originally, electron density was the only primary quantity observable by groundbased radio techniques. During the last two decades information on other physical parameters of the ionosphere, such as charged particle temperature (T e , T i and ion composition (m i ), as ...
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Dissociative Recombination in Planetary Ionospheres
1993Ionization in planetary atmospheres can be produced by solar photoionization, photoelectron impact ionization, and, in auroral regions, by impact of precipitating particles. This ionization is lost mainly in dissociative recombination (DR) of molecular ions.
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Planetary electromagnetic waves in the ionospheric E-layer
Journal of Atmospheric and Solar-Terrestrial Physics, 2003Abstract The linear theory for the large-scale (λ>10 3 km ) electromagnetic (EM) waves in the middle-latitude ionospheric E-layer is developed. The general dispersion relation for these waves is derived. It is shown that the latitudinal inhomogeneity of the geomagnetic field and the angular velocity of the Earth's rotation can lead to ...
P. K. Shukla +4 more
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