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![[Figure 1]](yi5190fig1mag.jpg)
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Figure 1
Conceptual schematic of coherent diffraction imaging experiments using nano-focused X-ray free-electron laser pulses. Femtosecond X-ray pulses were generated using the self-amplified spontaneous radiation process. Alternatively, spectrally narrower pulses were produced using a diamond crystal and a magnetic chicane (self-seeding scheme). The X-rays were focused to approximately 570 nm × 440 nm (FWHM) using Kirkpatrick–Baez mirrors. Gold nanoparticles with a diameter of 100 nm were dispersed on a silicon nitride membrane. Diffraction patterns from individual nanoparticles were recorded using a JUNGFRAU detector. Phase retrieval was applied to reconstruct 2D projected density maps of single nanoparticles. Additionally, the radial intensity distribution from each diffraction pattern was used to estimate the incident flux density and transverse coherence length when the specimen's structural parameters were known. |
![[Figure 1]](yi5190fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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