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Electrodynamics in an electric cusp and a new type of particle acceleration by electric reconnection

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1 Author(s)
Kikushi, H. ; Coll. of Sci. & Technol., Nihon Univ., Tokyo, Japan

Summary form only given, as follows. This paper discusses a subject of 'Electrodynamics in an Electric Cusp and a New Type of Particle Acceleration by Electric Reconnection'. First of all, electric potential and field perturbed by a spherical conducting particle placed in an idealized electric cusp with a quadrupole configuration are obtained Then a general prescription to particle dynamics in such a cusp is given on the basis of both Newtonian and Hamiltonian descriptions, introducing a new electric force arising from induced charges in the form of a tiny quadrupole. Particle trajectory, velocity, and acceleration are obtained analytically when a dust particle is placed in the zodiacal plane. It is found that a new type of particle acceleration may occur in an electric cusp and inside the quadrupole, even though the particle is uncharged, as a result of an energy release of electrostatic energy and its conversion to kinetic energy of the particle. In particular, its trajectory, velocity, and acceleration are evaluated numerically in a graphical form with particular reference to planetary ring formation due to upward motion of dust particles above a ground for horizontal electrification of planetary clouds.

Published in:

Plasma Science, 1998. 25th Anniversary. IEEE Conference Record - Abstracts. 1998 IEEE International on

Date of Conference:

1-4 June 1998