Which instrument is used for personal dosimetry among the following options?

Which instrument is used for personal dosimetry among the following options?

• A. Pocket ionization chamber
• B. Geiger-Mueller detector
• C. Film badge
• D. Thermoluminescent dosimeter

Answer: (A)

Personal dosimetry focuses on knowing the actual radiation dose a person has received. An instrument that gives an immediate reading of the dose during exposure is ideal for real-time monitoring, allowing the wearer to react if the dose approaches safety limits. The pocket ionization chamber provides just that: a compact device that responds to radiation and can be read right away to reveal the current dose, enabling immediate awareness and action if exposure starts to rise. In contrast, film badges and thermoluminescent dosimeters are passive dosimeters. They accumulate dose over a period and must be processed or read later to determine the total exposure, which is useful for recordkeeping but not for real-time monitoring. The Geiger-Mueller detector is great for detecting radiation presence and measuring dose rate in an area, but it doesn’t yield a personal cumulative dose record over time. Therefore, the pocket ionization chamber is the best choice for personal dosimetry with real-time feedback.

Personal dosimetry focuses on knowing the actual radiation dose a person has received. An instrument that gives an immediate reading of the dose during exposure is ideal for real-time monitoring, allowing the wearer to react if the dose approaches safety limits. The pocket ionization chamber provides just that: a compact device that responds to radiation and can be read right away to reveal the current dose, enabling immediate awareness and action if exposure starts to rise.

In contrast, film badges and thermoluminescent dosimeters are passive dosimeters. They accumulate dose over a period and must be processed or read later to determine the total exposure, which is useful for recordkeeping but not for real-time monitoring. The Geiger-Mueller detector is great for detecting radiation presence and measuring dose rate in an area, but it doesn’t yield a personal cumulative dose record over time. Therefore, the pocket ionization chamber is the best choice for personal dosimetry with real-time feedback.