In radiation safety, which term best describes the reduction of exposure by barriers?

The term that best describes the reduction of exposure to radiation using barriers is radiation shielding. This involves the use of materials that can absorb or deflect radiation to minimize the amount reaching individuals or sensitive areas. Common materials used for radiation shielding include lead, concrete, and specialized plastics, each selected based on the type of radiation being shielded (such as gamma rays, X-rays, or beta particles) and the level of protection required.

Radiation detection refers to the methods and instruments used to identify and measure radiation levels in an environment, but it does not involve reducing exposure. Radiation monitoring involves the ongoing measurement of radiation levels to ensure safety protocols are being followed; it assesses the situation but does not actively shield against exposure. Radiation therapy is a medical treatment that uses high doses of radiation to kill cancer cells but is not related to exposure reduction through barriers. Therefore, radiation shielding is the most accurate term for the concept of reducing exposure to radiation via physical barriers.