Which of the following dosimeters is specifically known for its sensitivity to lower levels of radiation?

The Optically Stimulated Luminescent (OSL) dosimeter is recognized for its ability to measure low levels of radiation with high sensitivity. This sensitivity is attributed to its unique detection mechanism, which involves trapping electrons in a lattice structure. When stimulated by light, these electrons are released, emitting luminescence which is proportional to the amount of radiation exposure. This allows OSL dosimeters to effectively detect subtle doses of radiation, making them particularly useful in environments where low doses are of concern.

In comparison, while film badges, pocket dosimeters, and thermoluminescent dosimeters (TLDs) serve important roles in measuring radiation exposure, they typically have limitations in sensitivity at lower dose levels. Film badges, for instance, may not adequately detect very low radiation exposures due to their response characteristics and the need for sufficient exposure to develop a visible change. Pocket dosimeters provide real-time readings, but their sensitivity may not match that of OSL dosimeters in detecting low doses. TLDs, while sensitive to a range of doses, also have a threshold below which they are less reliable than OSL dosimeters. Hence, the OSL dosimeter stands out as the most suitable option for monitoring lower levels of radiation accurately.