Single-Shot Coherent X-Ray Imaging Instrument at PAL-XFEL
2021
Daeho Sung | Daewoong Nam | Myong-jin Kim | Seonghan Kim | Kyung Sook Kim | Sang-Youn Park | Sun Min Hwang | Chulho Jung | Heemin Lee | Do Hyung Cho | Minseok Kim | Intae Eom | Su Yong Lee | Changyong Song | Sangsoo Kim
We developed a single-shot coherent X-ray imaging instrument at the hard X-ray beamline of the Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL). This experimental platform was established to conduct a variety of XFEL experiments, including coherent diffraction imaging (CDI), X-ray photon correlation spectroscopy (XPCS), and coherent X-ray scattering (CXS). Based on the forward-scattering geometry, this instrument utilizes a fixed-target method for sample delivery. It is well optimized for single-shot-based experiments in which one expects to observe the ultrafast phenomena of nanoparticles at picosecond temporal and nanometer spatial resolutions. In this paper, we introduce a single-shot coherent X-ray imaging instrument and report pump–probe coherent diffraction imaging (PPCDI) of Ag nanoparticles as an example of its applications.
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