Lonsdaleite SXES spectrum, 7 keV e- beam, LN2 (77K), Tomkins et al. 2022
Measurement details
| Description | SXES spectrum of Lonsdaleite |
| Reference | Tomkins et al. 2022 Tomkins, A., Wilson, N., MacRae, C., Salek, A.; Field, M., Brand, H., Langendam, A., Stephen, N., Torpy, A., Pintér, Z., Jennings, L., and McCulloch, D. Sequential Lonsdaleite to Diamond Formation in Ureilite Meteorites via In Situ Chemical Fluid/Vapor Deposition, PNAS, 2022(119) https://doi.org/10.1073/pnas.2208814119 |
| Date measured | 2020-06-19 |
| Material | Lonsdaleite [ C ] |
| Specimen | NWA 7983 [Monash University], Morocco |
| Specimen temperature | LN2 (77K) |
| Technique | Soft x-ray emission spectroscopy (SXES) |
| Instrument | JEOL 8530F |
| Probe | 7 keV electron beam |
| Beam current | 80.6 nA |
| Probe diameter | 0.4 μm |
| Camera | SOPHIA-XO: 2048B |
| Grating | 200N |
| ADC gain | High |
| ADC speed | 1.0 Mhz |
| Binning | 256 |
| Acquisition time | 167.2 s |
| Channel count | 1998 |
| Energy range | 39.1966 … 126.664 eV |
| Intensity range | -518.5 … 207830 counts |
| Integral | 2.5223×107 counts |
Measurement spectrum
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Measurement image
SXES spectrum of Lonsdaleite
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