摘要: This review deals with basic results of experimental and theoretical studies (numerical simulations included) the distributions, composition, dynamics particles a hot plasma in geomagnetosphere. Attention is drawn mainly to ring current sheet magnetotail, which play key role physics magnetosphere. The integrity (unity) system outer radiation belt–ring current–near substantiated (the concept geocorona). From viewpoint this concept, physical processes theories are considered that were suggested order explain structure magnetosphere plasma. An emphasis made on disputable issues topical problems so far unsolved.