[en] Lyoluminescence is the light emitted when irradiated solid substances are dissolved. A large range of organic materials exhibit lyoluminescence, among the more sensitive of which are monosaccharides and amino acids. A dose response curve for mannose (C₆H₁₂O₆) and an example of lyoluminescence apparatus are illustrated. The principle advantage of lyoluminescence dosimetry is that lyoluminescent phosphors may be used which closely approximate the chemical composition of tissue. Therefore all radiation fields KERMA in the phosphor approximates KERMA in tissue, and by design of dosimeter there will be a similar correspondence for absorbed dose. There are indications that the light conversion efficiency of lyoluminescent phosphors is not as dependent on LET as observed for thermoluminescent phosphors, and the possibility exists therefore, of an approximate tissue equivalent response in neutron and mixed radiation fields