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Dynamic Collision Frequency in Kelbg‐Pseudopotential‐Modelled Plasmas and the Method of Moments with Local Constraints
Author(s) -
Arkhipov Yu.V.,
Askaruly A.,
Dubovtsev D.Yu.,
Erimbetova L.T.,
Tkachenko I.M.
Publication year - 2015
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201400100
Subject(s) - pseudopotential , collision , interpolation (computer graphics) , complex plane , physics , plane (geometry) , collision frequency , function (biology) , extension (predicate logic) , plasma , mathematical analysis , holomorphic function , computational physics , quantum electrodynamics , mathematics , classical mechanics , quantum mechanics , geometry , motion (physics) , computer science , computer security , evolutionary biology , biology , programming language
The dense plasma dynamic collision frequency is modeled by the first two terms of its asymptotic expansion at high frequencies and its values at a few interpolation points on the real axis. This makes the dynamic collision frequency a non‐rational function whose extension onto the upper half‐plane of the complex frequency is holomorphic with a non‐negative imaginary part and with a continuous extension to the real axis. The validity of the suggested analytic form of the latter is tested against the simulation data, where the Kelbg effective potential was used. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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