The observation, either continuously or at intervals, of the levels of radiation in a given area, generally for the purpose of assuring that they have not exceeded prescribed amounts or, in case of radiation already present in the area, assuring that the levels have returned to those meeting acceptable safety standards.
Monitoring, Radiation
D005118
Extraterrestrial Environment
The environment outside the earth or its atmosphere. The environment may refer to a closed cabin (such as a space shuttle or space station) or to space itself, the moon, or other planets.
Space (Astronomy),Environment, Extraterrestrial,Environments, Extraterrestrial,Extraterrestrial Environments,Spaces (Astronomy)
D000398
Air Pollution, Radioactive
Contamination of air with radioactive substances.
Radioactive Air Pollution,Pollution, Radioactive Air
D013325
Strontium Isotopes
Stable strontium atoms that have the same atomic number as the element strontium, but differ in the atomic weight. Sr-84, 86, 87, and 88 are the stable strontium isotopes.