[en] Considered is the mechanism of formation in the geomagnetic field of albedo electrons observed in the equator region at the heights of artificial Earth's satellites. A comparison of the calculated albedo electron fluxes to the flux observed shows that at the broken L-envelopes the albedo electron flux with Esub(e) > or approximately 100 MeV could be explained by the decay of charged pions produced following the interaction of primary cosmic rays (PCR) with the atomic nuclei of the air. At the closed L-envelopes the electron flux observed could be explained by the electron interaction with the residual proton atmosphere of the inner radiation belt. At the closed L-envelopes in the region of the equator and at high latitudes the same electron fluxes as at the broken L-envelopes should be observed. The time of the formation of fluxes of Esub(e) > or approximately 100 MeV electrons produced by the decay of charged pions following the PCR interaction with the residual atmosphere increases with L, and for L >= 1.2 it becomes comparable with the time of the geomagnetic field stable existence. Owing to the same reason, for the L-envelopes indicated the flux of such electrons should decrease with the L growth. The fluxes of electrons with Esub(e) > or approximately 100 MeV and great pitch-angles observed at the broken L-envelopes in the vicinity of the geomagnetic equator could be explained by the albedo electrons produced following the PCR interactions with the residual atmosphere