Abstract
On account of their fairly long life, alkaline earth halophosphate phosphors are still the mainstay of the fluorescent lamp industry. For higher efficiency and an increased selection of spectral distribution, with minor variation in composition and dopants, halophosphates are synthesised nowadays. It is not surprising, therefore, that these synthesised apatite phosphors are still attracting the attention of the research workers too. In this paper the results of TL and TL spectra of X-irradiated synthetic fluorapatite are reported with a view to understand the nature of the recombination processes in the system, vis-à-vis the defects created by irradiation. Such studies are ultimately aimed at unravelling the causes for the fatigue and quantum efficiency changes that are occuring at present in such phosphors.
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