Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Toroidal multilayer mirrors for laboratory soft X-ray grazing emission X-ray fluorescence

: Baumann, J.; Jonas, A.; Reusch, R.; Szwedowski-Rammert, V.; Spanier, M.; Grötzsch, D.; Bethke, K.; Pollakowski-Herrmann, B.; Krämer, M.; Holz, T.; Dietsch, R.; Mantouvalou, I.; Kanngießer, B.


Review of scientific instruments 91 (2020), No.1, Art. 016102, 4 pp.
ISSN: 0034-6748
ISSN: 1089-7623
Journal Article
Fraunhofer IZM ()

Efficient soft X-ray spectroscopy in the laboratory is still a challenging task. Here, we report on new toroidal multilayer optics designed and applied with the laser-produced plasma (LPP) source of the Berlin Laboratory for innovative X-ray technologies. The optics are described and characterized, and the application of the updated source to scanning-free grazing emission X-ray fluorescence is demonstrated on thermoelectric gold-doped copper oxide nanofilms. The comparison with synchrotron measurements allows estimating a flux on the sample of approximately 7.5 × 109 photons/s in the 1 keV range on a 100 µm × 100 µm spot, emphasizing the suitability of the updated LPP source for the application in photon hungry experiments.
K.B. is most grateful for the scholarship from the International Max-Planck Research School at the Fritz Haber Institute. J.B. would like to thank the Excellence Initiative of the Deutsche Forschungsgemeinschaft for financial support.