Barrier of attenuating materials used to reduce radiation exposure.
Temper brittleness, английский Brittleness that results when certain steels are held within, or are cooled slowly through, a certain range of temperature below the transformation range. the brittleness is revealed by notched- bar impact tests at or below room temperature.
Attenuation coefficient (rt), английский Average rate that a beam of radiation changes as it passes through a body.
