State primary standards of equivalent dose and equivalent dose rate units of neutron radiation

In 1975, the Gosstandard of the USSR approved the primary standard of equivalent dose and equivalent dose rate units of neutron radiation created in the All-Union Scientific Research Institute of Metrology as primary State standards. In accordance with international recommendations and standards, the degree of radiation hazards to a chronically exposed human being is evaluated with the aid of the equivalent dose which is defined as a physical quantity D/sub eq/ equal to the product of the adsorbed dose D and the average quality factor anti K. The quality factor anti K depends on the linear energy transfer of charged particles L/sub infinity/(keV/..mu..), its dependence on the neutron energy E being frequently used in the case of neutron radiation. The unit of an equivalent dose is joule per kilogram (J/kg); the rem unit can also be used (1 rem = 0.01 J/kg).