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Figure 2
FEL spectra (a) and energy (b) as a function of R56 obtained with the model described by Pannek et al. (2023BB29). The following few parameters are defined to characterize the curve: the value of the FEL energy at the first peak (FELpeak1); the R56 value giving the maximum FEL energy (R56peak); the width of the Gaussian fit of the first peak (σwidth) and the ratio between the FEL energy at the first and second peaks (R = [{{FEL_{\rm peak1}}/{FEL_{\rm peak2}}}]).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 1| January 2025|
https://doi.org/10.1107/S1600577524011585
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