What is the radiation monitoring device called?

• A. Film badge
• B. Dosimeter badge
• C. Geiger counter
• D. Ionization chamber

Answer: (B)

A dosimeter badge is the wearable device used to track an individual’s radiation exposure over time. It records the cumulative dose received during a work period, providing a personal exposure history for safety monitoring and regulatory compliance. Modern versions may use thermoluminescent material or electronic sensors, but the general term remains dosimeter badge. A Geiger counter measures radiation presence and intensity in the environment, not a person’s accumulated dose. An ionization chamber is a detector used to measure dose rate, typically for instrument calibration or environmental surveys, not for personal dosimetry. A film badge is a type of dosimeter badge, but the broad term that describes the purpose is dosimeter badge.