What type of dosimeter is classified as a low energy dosimeter?

A pocket dosimeter is classified as a low-energy dosimeter primarily due to its sensitivity to lower energy radiation, such as beta particles and low-energy x-rays. This type of dosimeter typically consists of a small ionization chamber or semiconductor that can provide immediate readings of radiation exposure. The design of pocket dosimeters allows them to respond effectively to the types of radiation commonly encountered in clinical settings, particularly where low-energy radiation is prevalent.

This classification is important in the context of radiation therapy, as different dosimeters are used for different energy ranges and types of radiation. For example, thermoluminescent dosimeters (TLDs) can measure a broader spectrum of radiation energies but are not specifically categorized as low energy dosimeters. Instruments like the cutie pie are generally used for higher radiation levels and broader surveys rather than specifically tailored to low-energy measurements.

Therefore, the pocket dosimeter's dedicated functionality for low-energy radiation makes it the correct choice among the given options.