Witherite CL/SEM spectrum, 20 keV e- beam, CSIRO 2016
Measurement details
| Description | CL/SEM spectrum of Witherite |
| Reference | Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton https://research.csiro.au/microbeam-lab/ |
| Material | Witherite [ BaCO3 ] |
| Specimen temperature | Ambient |
| 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 | -0.127 … 28.2612 counts |
| Integral | 5798.01 counts |
| Data filter | Savitzky-Golay, 3rd order, ±20 channels |
| Lines | Unspecified 2.275 eV (100%), 2.936 eV (22%) |
Composition
| Element | Atoms | At% | Wt% |
|---|---|---|---|
| Ba | 1 | 20 | 69.6 |
| C | 1 | 20 | 6.09 |
| O | 3 | 60 | 24.3 |
Measurement spectrum
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Measurement image
CL/SEM spectrum of Witherite