fig2.html
Fig. 2. Measured photon flux of the monochromatized x-ray emitted from the long undulator at BL19 (photon energy: 10.4276keV, bandwidth: 1.4eV)
It is found that the peak flux in the new operation is 2.7 times larger than that in the previous operation. This ratio is well explained by the calculation shown in Fig. 1.
(by courtesy of Kenji Tamasaku, Ishikawa Coherent X-Ray Optics Lab., RIKEN)