Texas Industrial Radiography Gamma Practice Test

What type of radiation do Film Badges primarily monitor?

1. Alpha Particles

2. Beta Particles

3. Gamma Rays

4. All types of ionizing radiation

The correct answer is: All types of ionizing radiation

Film badges are a type of dosimeter used to monitor exposure to ionizing radiation, particularly in occupational settings. They are designed to integrate the amount of radiation received over a specific period of time. The correct answer acknowledges that film badges can detect a range of ionizing radiation types, including alpha particles, beta particles, and gamma rays. This versatility is due to the construction of film badges, which typically contain a layer of photographic film that responds to different types of radiation depending on the filtering materials present. For example, beta particles can penetrate through the film and contribute to the exposure, while alpha particles, which are less penetrating, can be detected if the film badge includes materials that allow alpha particles to be absorbed. Additionally, gamma rays, which have high penetration power, are effectively monitored by the film as well. Film badges thus provide a comprehensive measure of an individual's exposure to various forms of ionizing radiation, making them essential for ensuring safety in environments where multiple types of radiation may be present.