Fifty years of neutron physics

A survey of neutron physics achievements during fifty years of its development beginning from neutron discovery in 1932 has been given. A complex of experimental and theoretical data collected by soviet and foreign laboratories in the nucleus fission physics has been considered retrospectively. Neutron methods of nucleus investigation have been described. Theoretical and eXperimental problems of reactor physics and technique arising during the chain nuclear process investigation have been discussed. Up-to-data problems of neutron physics have been considered in detail. A variety of neutron properties and spheres of neutron physics application have been noted