Apatite CL/SEM spectrum, 20 keV e- beam, CSIRO 2016

Measurement spectrum

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Measurement details

Description CL/SEM spectrum of Apatite
Reference Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton
https://research.csiro.au/microbeam-lab/
Material Apatite [ Ca5(PO4)3(OH, F, Cl) ]
Specimen temperature Ambient
Analysis technique Cathodoluminescence (CL), using an Electron Probe Micro-Analyser (EPMA)
Instrument JEOL 8500F
Probe 20 keV electron beam
Beam current 10 nA
Probe diameter 20 μm
Channel count 1024
Energy range 1.276 … 6.21118 eV
Intensity range -0.375 … 216 counts
Integral 46607.5 counts
Lines
  • Dy3+ 2.1479 eV
  • {{linesearch:e8e9fe2b-61cb-4536-9e4d-ab50db093bc9|Eu2+}}: 2.69 — 2.95 eV (39.5%)
  • {{linesearch:4188f9ed-b3de-4c4e-91bc-186501973ffd|Ho3+}}: 1.648 eV
  • {{linesearch:03dbbb76-8a26-46b2-9892-15054e297540|Intrinsic}}: 2.4 — 3.9 eV (25%)
  • {{linesearch:a31f2a81-054b-4775-95b3-2ef33fd99526|Nd3+}}: 1.373 eV, 1.391 eV, 1.405 eV, 1.423 eV, 1.543 eV, 1.33 — 1.45 eV
  • REE 2.0759 eV
  • {{linesearch:01db5b63-277f-4fd1-b8ab-d5b38732f3c0|REE3+}}: 1.9246 eV, 1.898 eV, 1.999 eV, 2.5689 eV, 2.1903 eV, 2.04848 eV
  • Unspecified 1.763 eV, 3.228 eV

Composition

Nominal composition of Apatite [ Ca5(PO4)3(OH,F,Cl) ].
Element Atoms At% Wt%
H 0.118 1.66 0.07
Ca 1.667 23.42 39.36
P 1 14.05 18.25
O 4.112 57.76 38.76
F 0.111 1.56 1.24
Cl 0.111 1.56 2.32