Opal CL spectrum, 14 keV e- beam, Götze 2000c
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Measurement details
| Description | CL spectrum of Opal |
| Reference | Götze, J. (2000). Cathodoluminescence microscopy and spectroscopy in applied mineralogy. Germany: Technische Universität Bergakademie Freiberg. ISBN 9783860121160 |
| Material | Opal [ SiO2·nH2O ] |
| Analysis technique | Cathodoluminescence (CL) |
| Instrument | HC1-LM |
| Probe | 14 keV electron beam |
| Detector name | EG&G PAR:1235 |
| Det. technology | Charge-coupled device (CCD) |
| Channel count | 1024 |
| Wavelength range | 317.709 … 781.837 nm |
| Intensity range | 100 (normalised intensity) |
| Line | NBOHC 1.91 eV (96.2%) |
Composition
| Element | Atoms | At% | Wt% |
|---|---|---|---|
| H | 3.47 | 3.47 | 0.181 |
| Si | 32.24 | 32.24 | 46.73 |
| O | 64.29 | 64.29 | 53.09 |
| Total | 100 | 100 | 100 |
Measurement image
CL emission spectra of Opal. Figure 14-1 in Götze 2000c