Which type of radiation exposure is effectively monitored by TLDs and OSLs?

Thermoluminescent dosimeters (TLDs) and optically stimulated luminescence dosimeters (OSLs) are specifically designed to measure ionizing radiation, particularly gamma and X-ray radiation. Both types of dosimeters work by absorbing energy from radiation. When they are exposed to this radiation, they store the energy in a crystalline structure. Upon heating (TLD) or exposure to light (OSL), the stored energy is released in the form of light, which can then be measured and correlated to the amount of radiation exposure received.

Gamma and X-ray radiation have sufficient penetration power and energy to be effectively registered by these devices, making TLDs and OSLs invaluable tools for monitoring occupational radiation exposure in various environments, including medical, industrial, and research facilities.

While TLDs and OSLs may detect low levels of beta radiation under certain conditions, their primary use and effectiveness lie in measuring gamma and X-ray radiation. Other radiation types, such as alpha and neutron radiation, often require different detection methods due to their distinct physical properties and interaction with matter.