Statistics – Computation
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jhatd...7...39m&link_type=abstract
Johns Hopkins APL Technical Digest (ISSN 0270-5214), vol. 7, Jan.-Mar. 1986, p. 39-41.
Statistics
Computation
Computational Astrophysics, Ionized Gases, Planetary Atmospheres, Solar Physics, Thermal Diffusion, Ionic Collisions, Ionization Cross Sections, Planetary Ionospheres, Quantum Mechanics, Stellar Interiors, Stellar Physics
Scientific paper
A new calculation of thermal diffusion in planetary ionosphere and stellar interior ionized gases is made based upon a quantal and dynamic shielding correction. In this model quantum mechanics are used to calculate collision cross sections at high temperatures as well as at low. The classical theory static shielding approximation is replaced by a dynamic shielding approximation that allows the surrounding ion sea to lag somewhat in its response to motions of the two moving charges considered. The classical assumptions are found to be valid for most of the planetary atmospheres and the solar corona, and consequently, the present theory does not account for the anomalous venusian ionosphere ion distributions. Significant differences from classical theory are found for the thermal diffusion estimates of stellar interior ionized gases.
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