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Radiation damage in crystalline phases with the apatite structure is of interest in the biomedical, geoscience, and materials science communities. Phases close to hydroxyl apatite [Ca 5 (PO 4 ) 3 OH] in composition are volumetrically the most significant in dental enamel and bone. Natural apatites with variable halogen compositions [Ca 5 (PO 4 ) 3 (F,OH,Cl)] are used by geoscientists to place constraints on the thermochronologic conditions under which portions of the Earth evolved. Rare-earth-silicate isomorphs of these naturally occurring apatites are also of interest because they may be actinide hosts in ceramic nuclear waste forms.
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Cameron et al. (1992) studied this question.
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