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Dynamical screening of interactions in gravitating systems and the ephemeris time

Published online by Cambridge University Press:  25 May 2016

A.V. Vityazev  and
A.G. Bashkirov
A.V. Vityazev
Affiliation:
Institute of Planetary Geophysics, RAS B. Gruzinskaya Str. 10, 123810 Moscow, Russia e-mail: abas@orig.ipg.msk.su
A.G. Bashkirov
Affiliation:
Institute of Planetary Geophysics, RAS B. Gruzinskaya Str. 10, 123810 Moscow, Russia e-mail: abas@orig.ipg.msk.su

Extract

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The concept of the screening of interparticle interactions has its origin in electrolyte and plasma theories. The most known example is the Debye-Hückel screening of the potential of the resting test charge provided with the availability of charges of the opposite sign and the total electroneutrality of the plasma. When this charge is moving, the static Debye screening decreases and an anisotropic dynamic screening develops due to excitation of waves of charge density. As a result, an effective potential of the positive moving ion becomes alternating with a characteristic length of space oscillations of order of the Debye length (Peter, 1990). Such dynamic screening is due to perturbations of charges of both signs by the varying field of moving test charge. This effect does not call for an electroneutrality of the system and is associated with the long-range character of the Coulomb interaction potential only.

Type
Part VIII - General Relativity. Physics
Information
Symposium - International Astronomical Union , Volume 172: Dynamics, Ephemerides and Astrometry of the Solar System , 1996 , pp. 327 - 330
Copyright
Copyright © Kluwer 1996 

References

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