For our experiment, we used natural apatite sample from Durango, Mexico. Durango apatite is a fluorapatite which contains fluorine and has a chemical formula of Ca5(PO4)3F. From the electron microprobe analysis, Durango apatite contains high fluorine with weight percent of 4.7 wt%. Durango apatite was cut along two crystallographic orientations: parallel (║) and perpendicular ( ) to c-axis in order to observe the anisotropy of the etched track radius in both cut of apatite. Each apatite samples were heated for 450°C for 24 hours to completely anneal the spontaneous fission tracks due to it nature as it comes form natural specimens.
Samples were prepared for irradiation by polishing the samples to thickness approximately between 60 – 100
Samples were prepared for irradiation by polishing the samples to thickness approximately between 60 – 100