Fluorite CL/SEM spectrum, 20 keV e<sup>-</sup> beam, CSIRO 2016

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

Description	CL/SEM spectrum of Fluorite
Reference	Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton https://research.csiro.au/microbeam-lab/
Material	Fluorite [ CaF₂ ] Specimen of fluorite, from Minerva mine, Cave-in-Rock, Hardin Co., Illinois, USA. Specimen M 52847, Museums Victoria. © Photo by Rodney Start, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
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	0.44 … 2611 counts
Integral	288197 counts
Lines	Defect 4.118 eV (100%), M center 1.672 eV (0.9%), M+ center 1.919 eV (1.5%)

Nominal composition of Fluorite [ CaF₂ ].
Element	Atoms	At%	Wt%
Ca	1	33.3	51.3
F	2	66.7	48.7

CL/SEM spectrum of Fluorite