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N. Dubouloz J.-J. Berthelier M. Malingre L. Girard Y. Galperin J. Covinhes D. Chugunin M. Godefroy G. Gogly C. Guérin J.-M. Illiano P. Kossa F. Leblanc F. Legoff T. Mularchik J. Paris W. Stzepourginski F. Vivat L. Zinin 《Annales Geophysicae》1998,16(9):1070-1085
Hyperboloid is a multi-directional mass spectrometer measuring ion distribution functions in the auroral and polar magnetosphere of the Earth in the thermal and suprathermal energy range. The instrument encompasses two analyzers containing a total of 26 entrance windows, and viewing in two almost mutually perpendicular half-planes. The nominal angular resolution is defined by the field of view of individual windows 13° × 12.5°. Energy analysis is performed using spherical electrostatic analyzers providing differential measurements between 1 and 80 eV. An ion beam emitter (RON experiment) and/or a potential bias applied to Hyperboloid entrance surface are used to counteract adverse effects of spacecraft potential and thus enable ion measurements down to very low energies. A magnetic analyzer focuses ions on one of four micro-channel plate (MCP) detectors, depending on their mass/charge ratio. Normal modes of operation enable to measure H+, He+, O++, and O+ simultaneously. An automatic MCP gain control software is used to adapt the instrument to the great flux dynamics encountered between spacecraft perigee (700 km) and apogee (20 000 km). Distribution functions in the main analyzer half-plane are obtained after a complete scan of windows and energies with temporal resolution between one and a few seconds. Three-dimensional (3D) distributions are measured in one spacecraft spin period (120 s). The secondary analyzer has a much smaller geometrical factor, but offers partial access to the 3D dependence of the distributions with a few seconds temporal resolution. Preliminary results are presented. Simultaneous, local heating of both H+ and O+ ions resulting in conical distributions below 80 eV is observed up to 3 Earths radii altitudes. The thermal ion signatures associated with large-scale nightside magnetospheric boundaries are investigated and a new ion outflow feature is identified associated to the polar edge of the auroral oval. Detailed distribution functions of injected magnetosheath ions and ouflowing cleft fountain ions are measured down to a few eVs in the dayside. 相似文献
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A. A. Chernyshov D. V. Chugunin M. M. Mogilevsky I. L. Moiseenko A. A. Ilyasov V. V. Vovchenko S. A. Pulinets M. V. Klimenko I. E. Zakharenkova A. V. Kostrov M. E. Gushchin S. V. Korobkov 《Geomagnetism and Aeronomy》2016,56(1):72-79
Permanent variation in parameters affecting the key characteristics of the auroral ionosphere hinders the creation of a sufficiently accurate model for practical application within classical approaches describing quasi-stationary phenomena. The fractal approach for describing the properties of plasma in the auroral region has the following advantages: the results are versatile and the emergence of self-similar structures is nature-independent. Due to the self-similarity and fractality of ionospheric structures, it will suffice to have a few measurements within a characteristic scale; therefore, it is necessary to obtain a series of simultaneous measurements at intervals of tens of meters to tens of kilometers to describe the spatial and temporal distribution of inhomogeneities in the ionospheric plasma. Small and relatively low-cost satellites (the socalled cubesats) are supposed to be used to check whether the fractal approach can be applied to study the inhomogeneous structure of the ionosphere, including with artificial heating. The satellites should be located at different distances from each other to span the scales ranging from the inertial length of electrons to the inertial length of O+ ions. For each satellite, it is supposed to measure the variations in plasma density and electric and magnetic fields. 相似文献
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Simulation of Physical Phenomena in the Ionosphere and Magnetosphere of the Earth on Krot Plasma Device. Some Results and Prospects 总被引：1，自引：0，他引：1
N.?A.?AidakinaEmail author A.?G.?Galka V.?I.?Gundorin M.?E.?Gushchin I.?Yu.?Zudin S.?V.?Korobkov A.?V.?Kostrov K.?N.?Loskutov M.?M.?Mogilevskiy S.?E.?Priver A.?V.?Strikovskiy D.?V.?Chugunin D.?V.?Yanin 《Geomagnetism and Aeronomy》2018,58(3):314-324
Krot device is a unique installation of the scientific infrastructure of the Russian Federation. It is a source of highly uniform low-temperature plasma that takes up to several tens of cubic meters. The setup makes it possible to perform both scaling laboratory simulations of ionospheric and magnetospheric phenomena in the approximation of unbound plasma, as well as plasma tests of full-size samples of the onboard equipment of spacecraft (SC). The simulation results of the dynamics and interaction of small-scale thermal plasma irregularities occurring during ionospheric heating experiments are presented. The impedance of the small-size models of RESONANCE and STRANNIK SC electric antennas in plasma is measured. The possible use of free-space calibration of antennas in the magnetospheric portions of the orbit in the ELF and VLF ranges is confirmed. The efficiency of a new plasma parameters resonance sensor for the TRABANT SC in the ionospheric range of electron densities is shown. 相似文献
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Chugunin D. V. Chernyshov A. A. Moiseenko I. L. Viktorov M. E. Mogilevsky M. M. 《Geomagnetism and Aeronomy》2020,60(5):538-546
Geomagnetism and Aeronomy - A method is proposed for the study of the height–time characteristics of physical processes in the region of auroral electron acceleration. Auroral kilometer... 相似文献
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Kosov A. S. Chernyshov A. A. Mogilevsky M. M. Chugunin D. V. Korogod V. V. Munitsyn V. A. Dolgonosov M. S. Skulachev D. P. 《Izvestiya Atmospheric and Oceanic Physics》2018,54(9):1282-1290
Izvestiya, Atmospheric and Oceanic Physics - This paper describes a space experiment that is planned to be performed within the framework of the Russian project of the microsatellite CHIBIS AI to... 相似文献
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