A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL

Agåker, M.; Söderström, J.; Baumann, T.M.; Englund, C.-J.; Kjellsson, L.; Boll, R.; De Fanis, A.; Dold, S.; Mazza, T.; Montaño, J.; Münnich, A.; Mullins, T.; Ovcharenko, Y.; Rennhack, N.; Schmidt, P.; Senfftleben, B.; Turcato, M.; Usenko, S.; Meyer, M.; Nordgren, J.; Rubensson, J.-E.

doi:10.1107/S1600577524005988

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Figure 13
The measured Kα emission line of Ne⁸⁺, showing a FWHM of 0.29 eV giving a resolving power of ∼3200. This width is larger than expected from the simulations shown in Fig. 11 where a resolving power of ∼11100 is shown. This emission line is expected to have very small intrinsic broadening, and we attribute the observed broadening as being due to e.g. a source size larger than the XFEL beam FWHM, or a misalignment of the optical components in the spectrometer.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 31| Part 5| September 2024|

https://doi.org/10.1107/S1600577524005988

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