Understanding Neutron Radiography Post Exam Reading VIII-Part 2a of 2A

PART 5. Luminescent Dosimetry
Thermoluminescent Dosimetry
Thermoluminescence is the emission of light from previously irradiated
materials after gentle heating. The radiation effect in thermoluminescent (TL)
materials is similar to that observed in scintillators, except that light photon
emission does not occur in thermoluminescent materials until some heat
energy is supplied (Fig. 19). Measurement of the light photons emitted after
heating permits correlation to the amount of ionizing radiation energy that was
absorbed in the thermoluminescent material.
Thermoluminescent dosimetry (TLD) is possible for beta, gamma and neutron
(alpha?) radiations, if the appropriate thermoluminescent material is used.
Charlie Chong/ Fion Zhang