A film badge is capable of measuring dose received from which type of neutrons?

The film badge is specifically designed to measure radiation exposure, including the different types of neutron radiation. Thermal neutrons are those that have been slowed down and are primarily found in thermal equilibrium at room temperature, making them more likely to interact with materials used in film badges.

Film badges utilize materials that are sensitive to the energy levels found in thermal neutrons, allowing them to detect the doses these neutrons deliver to an individual. The primary mechanism involves the interaction of thermal neutrons with the materials, leading to detectable changes that can be analyzed after exposure.

In contrast, fast neutrons are high-energy neutrons that can penetrate materials more deeply and are less likely to interact with the materials used in common film badges. Gamma neutrons and alpha neutrons are not terms typically associated with neutron types in dosimetry; gamma irradiation is detected by different methods entirely, and alpha particles are distinct from neutron radiation. Therefore, the choice of thermal neutrons aligns correctly with the capabilities of a film badge in measuring neutron exposure.