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Figure 8
Comparative analysis of radial diffraction background profiles at the European XFEL SPB/SFX instrument. Throughout the varying scattering vectors (q), photon counts per µJ per pixel for helium mode (πHe) were lower than for nitrogen mode ([\pi_{{\rm{N}}_{2}}]), but still noticeably higher than at steady state chamber without injection (π0). The background noise reduction for helium mode was quantified as Irel = 3.244 ± 0.075 lower then nitrogen mode.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 4| July 2025| Pages 849-860
https://doi.org/10.1107/S1600577525003686
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