Abstract
This chapter explores the Lyoluminescence (LL), i.e., emission of light on dissolution by previously irradiated solids, a phenomenon that has been applied to the needs of radiation dosimetry. System parameters that influence the dissolution glow curve are, for example, injection speed, temperature, and pH value of the solution, and the design of the dissolution cell have been investigated. The physicochemical processes and the underlying mechanism for understanding the occurrence of lyoluminescence in both, inorganic and organic phosphors have been investigated. The importance of a high sensitivity lyoluminescence dosimetry system as the basic requirement has been emphasized. The role of sensitizers such as luminol, lucigenin, and fluorescein, which enhances the amount of light by many orders of magnitude has been highlighted in this chapter. The principle advantage of lyoluminescence dosimetry is the challenge, it presents in producing new lyoluminescent phosphors which closely approximate the chemical composition of tissue. The aim of this chapter is to provide an overview of the various characteristics which make a particular lyoluminescent material a good candidate for LL dosimetry such as a very simple method of synthesis, simple glow (decay) curve, high-sensitivity, very wide dose response (10 Gy–10.0 KGy) and low fading on storage.
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