OCCURRENCE OF ACCELERATING FIELD, FORMATION AND DYNAMICS OF RELATIVISTIC ELECTRON BEAM NEAR JUPITER
The possible dynamics of the electron beam, formed in the vicinity of Io, the natural satellite of Jupiter, and injected toward Jupiter, has been investigated analytically. When a beam penetrates the Jupiter plasma to a certain depth, the beam-plasma instability can be developed. In this case, the distribution function of electrons is expanded additionally by excited oscillations. These electrons, when their energy is of order of a required certain value, cause UV polar light. For closing of a current, the formation of a double electric layer is necessary. The necessary parameters and conditions for the formation of a double layer with a large jump of an electric potential at a certain height have been formulated, its properties, stability, behavior over time and beam reflection in its field for closing of a current have been described. Reflection of the beam can lead to its vortex dynamics.
Gladstone G.R., Waite J.H., Grodent Jr,D. et al. A pulsating auroral X-ray hot spot on Jupiter // Letters to nature. NATURE. – 2002. –Vol. 415. – P. 1000 - 1003.
Clarke J.T., Ajello J., Ballester G. et al. Ultraviolet emissions from the magnetic footprints of Io, Ganymede and Europa on Jupiter // Nature. – 2002. – Vol. 415. – P. 997–1000.
Connerney J.E.P. et al. Images of excited H+ 3 at the foot of the Io flux tube in Jupiter's atmosphere // Science. –1993. –Vol. 262. – P. 1035–1038.
Clarke J.T. et al. Far-ultraviolet imaging of Jupiter's aurora and the Io “footprint” // Science. –1996. –Vol. 274. –P. 404–409.
Prangé R.et al. Rapid energy dissipation and variability of the Io–Jupiter electrodynamic circuit // Nature. –1996. –Vol. 379. – P. 323–325.
Goldreich P., Lynden-Bell D. Io, a Jovian unipolar inductor // Astrophys. J. – 1969. – Vol. 156. – P. 59–78.
Belcher J.W. The Jupiter–Io connection, an Alfven engine in space // Science. –1987. – Vol. 238. – P. 170–176.
Neubauer F.M. Nonlinear standing Alfven wave current system at Io: theory // J. Geophys. Res. – 1980. – Vol. 85. – P. 1171-1178.
Mauk B.H., Haggerty D.K., Paranicas C. et al. Discrete and broadband electron acceleration in Jupiter’s powerful aurora // Nature. – 2017. – Vol. 549. – P. 66–69.
Dunn W.R., Branduardi-RaymontG., Ray L.C. et al. The independent pulsations of Jupiter’s northern and southern X-ray auroras // Nature. Astronomy. – 2017. – Vol. 1. – P. 758–764.
Jacobsen S., Saur J., Neubauer F.M., Bonfond B., Gérard J. C., Grodent D. Location and spatial shape of electron beams in Io’s wake // Journal of Geophysical Research. – 2010. – Vol. 115. – P. A04205.
Fomin P.I., Fomina A.P., Mal’nev V.N. Superradiation of magnetized electrons and the power of decameter radiation of the Jupiter – IO system // Ukrayins'kij Fyizichnij Zhurnal. – 2004. – Vol. 49. – No.1. – P. 3-8.
Onishchenko I.N., Linetskii A.R., Matsiborko N.G., Shapiro V.D., Shevchenko V.I. Contribution to the Nonlinear Theory of Excitation of a Monochromatic Plasma Wave by an Electron Beam // ZhETF Pis’ma v Redaktsiiu. – 1970. – Vol. 12. – No.12. – P. 407 – 411.
Mikhailovsky A.B. Theory of plasma instabilities Vol. 1. – M.: Atomizdat, 1975. – P. 272.
Singh N., Schunk R.W. Plasma response to the injection of an electron beam // Plasma Phys. and Contr. Fus. – 1984. – Vol. 26. – No.7. – P. 359 – 390.
Maslov V.I. Double layer formed by relativistic electron beam // Plasma Physics and Fusion Technology. – 1992. – Vol. 13. – No.10. – P. 676-679.
Okuda H., Horton R., Ono M., Ashour-Abdalla M. Propagation of nonrelativistic electron beam in a plasma in a magnetic field // Phys. Fluids. – 1987. – Vol. 30. – No.1. – P. 200 - 203.
Vortex Structures and Electron Beam Dynamics in Magnetized Plasma
Maslov V.I., Cheremnykh O.K., Fomina A.P., Kholodov R.I., Novak O.P. & Ovsiannikov R.T. (2021) Ukrainian Journal of Physics
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).