High-efficiency X-ray emission spectroscopy of cold-compressed Fe2O3 and laser-heated pressurized FeCO3 using a von Hámos spectrometer
| dc.contributor.author | Albers, Christian | |
| dc.contributor.author | Sakrowski, Robin | |
| dc.contributor.author | Thiering, Nicola | |
| dc.contributor.author | Libon, Lélia | |
| dc.contributor.author | Spiekermann, Georg | |
| dc.contributor.author | Kaa, Johannes M. | |
| dc.contributor.author | Gretarsson, Hlynur | |
| dc.contributor.author | Sundermann, Martin | |
| dc.contributor.author | Tolan, Metin | |
| dc.contributor.author | Wilke, Max | |
| dc.contributor.author | Sternemann, Christian | |
| dc.date.accessioned | 2024-07-08T12:33:49Z | |
| dc.date.available | 2024-07-08T12:33:49Z | |
| dc.date.issued | 2023-04-04 | |
| dc.description.abstract | X-ray spectroscopy of iron-bearing compounds under high pressure and high temperature is an important tool to understand geological processes in the deep Earth. However, the sample environment using a diamond anvil cell complicates spectroscopic measurements and leads to long data acquisition times. We present a setup for resonant and non-resonant X-ray emission spectroscopy and showcase its capabilities for in situ studies at high pressure and high temperature. Spin-state imaging of laser-heated FeCO3 at 75 GPa via Kβ1,3 emission spectroscopy demonstrates the great potential of this setup with measurement times within seconds for robust spin-state analysis results. The results of Kβ1,3 emission spectroscopy of cold-compressed Fe2O3 reveal a two-step spin transition with the ζ-phase between 57 GPa and 64 GPa, having iron in different spin states at the different iron sites. The phase transition via ζ- to Θ-phase causes a delocalization of the electronic states, which is supported by 1s2p resonant X-ray emission spectroscopy. | en |
| dc.identifier.uri | http://hdl.handle.net/2003/42585 | |
| dc.identifier.uri | http://dx.doi.org/10.17877/DE290R-24420 | |
| dc.language.iso | en | de |
| dc.relation.ispartofseries | Journal of analytical atomic spectrometry;38(5) | |
| dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | |
| dc.subject.ddc | 530 | |
| dc.title | High-efficiency X-ray emission spectroscopy of cold-compressed Fe2O3 and laser-heated pressurized FeCO3 using a von Hámos spectrometer | en |
| dc.type | Text | de |
| dc.type.publicationtype | Article | de |
| dcterms.accessRights | open access | |
| eldorado.secondarypublication | true | de |
| eldorado.secondarypublication.primarycitation | J. Anal. At. Spectrom., 2023,38, 1097-1107 | de |
| eldorado.secondarypublication.primaryidentifier | https://doi.org/10.1039/D3JA00014A | de |