Measurements of neutron fluxes with energies from thermal to several MeV in near-Earth space: SINP results.

Neutron measurement results obtained at SINP MSU since 1970 are presented. These measurements were made using techniques based on neutron moderation and subsequent detection in a Li6I(Eu) crystal or a He3 coronal counter. The measurements were mainly carried out in orbits with inclination of 52 degrees and altitudes of 200-450 km.

Distribution of energetic particles and secondary radiation according to orbital station "MIR" data obtained in 1991.

A set of instruments for measuring energetic particle fluxes, containing two neutron detectors under different plexiglas shielding thicknesses, a scintillation detector, measuring energy release >0.1 MeV and 0.5 MeV and a Geiger counter were launched onboard OS 'MIR'.

Control over the cosmic radiation level during flight of space vehicles Vostok 3, Vostok 4, Vostok 5 and Vostok 6.

1. During the flights of the"Vostok"series of spaceships the radiation conditions in space were kept under operative control which comprised: a. The solar activity observation and forecasting of the solar flares followed by the appearance of proton fluxes in the near space.