Hard X-ray self-seeding commissioning at PAL-XFEL

Min, C.-K.; Nam, I.; Yang, H.; Kim, G.; Shim, C.H.; Ko, J.H.; Cho, M.-H.; Heo, H.; Oh, B.; Suh, Y.J.; Kim, M.J.; Na, D.; Kim, C.; Kim, Y.; Chun, S.H.; Lee, J.H.; Kim, J.; Kim, S.; Eom, I.; Kim, S.N.; Koo, T.-Y.; Rah, S.; Shvyd'ko, Y.; Shu, D.; Kim, K.-J.; Terentyev, S.; Blank, V.; Kang, H.-S.

doi:10.1107/S1600577519005460

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Figure 11
The thinner diamond crystal case. The diamond crystal in [110] orientation and the thickness of 30 µm are used for the (220) Bragg reflection with $[{{\theta }} = 36.5^\circ]$ at 8.3 keV. (a) The FWHM bandwidths are 0.52 eV for the average intensity of all (black solid line), 0.33 eV (0.27 eV) for average intensity of each side peak [blue (red) dotted line], and 0.43 eV for the double-color seeding (green dotted line). (b) The FWHM bandwidth of each single-shot spectra is 0.22 eV for the single-color peak (red, blue lines) and is 0.45 eV (green line) for the double-color seeding. (c) The 1000 consecutive spectra. (d) The histogram of the relative center position of each peak. The separation energy between the two peaks is ∼0.2 eV.

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ISSN: 1600-5775

Volume 26| Part 4| July 2019| Pages 1101-1109

https://doi.org/10.1107/S1600577519005460

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