Final answer:
A radiation dosimetry badge measures the exposure to radiation that an individual receives. It uses materials like photographic film or crystals that respond to ionizing radiation by fogging or discharging, which is then analyzed to determine the radiation dose.
Step-by-step explanation:
The purpose of a radiation dosimetry badge, commonly referred to as a dosimeter or film badge, is to measure the amount of radiation exposure a person receives, particularly those who work with or near radioactive materials. These badges typically contain photographic film, which fogs up in response to exposure to ionizing radiation. The level of fogging is proportional to the amount of radiation, allowing for a quantitative analysis of exposure. More sophisticated badges use crystals or electronic dosimeters that are sensitive to lower levels of radiation and provide more reliable readings than film badges.
Examples of Dosimetry Badges
- Film badges use a similar film to that found in dental X-ray film. They have absorbers that help determine both the penetrating ability of radiation and the overall exposure.
- Electronic dosimeters often work by detecting the discharge of a rechargeable internal capacitor. The amount of this discharge correlates to the dose of ionizing radiation received.
Importantly, consistent monitoring with these personal dosimeters helps ensure that individuals adhere to safety guidelines and regulatory limits, thus minimizing the health risks associated with radiation exposure.