Terrestrial and cosmic radiation are the two primary sources of natural radioactivity that have an impact on our everyday lives. Ionizing radiation is emitted continuously by naturally occurring radioactive materials (NORMs). The passage above explains that there are two types of radiation exposure: external and internal. External exposure occurs when individuals are exposed to gamma rays emitted by radionuclides such as uranium-238, thorium-232, and potassium-40 found in the Earth’s crust. Conversely, internal exposure occurs when individuals inhale radon gas, a radioactive gas present in buildings and underground [1–4]. There has been increasing interest in investigating the potential health hazards linked to prolonged exposure to radiation [32,33].
Research Abstract
Research Date
Research Department
Research Journal
Nuclear Engineering and Technology
Research Member
Research Year
2024