How does an OSL badge compare to film badges in sensitivity and wear duration?

• A. Less sensitive and shorter wear time
• B. More sensitive and accurate than film badges and can be worn longer
• C. Equally sensitive but more expensive
• D. Only effective for high-energy beams

Answer: (B)

OSL dosimeters use a solid-state material that stores energy from radiation and releases light when stimulated, giving much higher sensitivity and a wider measurable dose range than film badges. Because the readout is optical and does not rely on chemical development, the results are more stable and the system supports longer wear periods—often months to a year depending on the program. Film badges, by contrast, require photographic processing, have a more limited sensitivity and dose range, and are typically issued for shorter wear periods. So, the OSL badge is more sensitive and accurate and can be worn longer.