AI Article Synopsis
- The study introduces an extreme ultraviolet (EUV) microscope designed for high-resolution imaging of laser-plasma targets, utilizing a Schwarzschild objective for sub-micrometer detail.
- The microscope successfully captured images of a cryogenic hydrogen target, using single EUV pulses from the FLASH laser at 13.5 nm, revealing a hydrogen jet containing ice fragments.
- This in situ EUV imaging technique is anticipated to enhance experimental research on warm dense matter, specifically for micrometer-sized samples in laser-plasma experiments.
Article Abstract
We present an extreme ultraviolet (EUV) microscope using a Schwarzschild objective which is optimized for single-shot sub-micrometer imaging of laser-plasma targets. The microscope has been designed and constructed for imaging the scattering from an EUV-heated solid-density hydrogen jet. Imaging of a cryogenic hydrogen target was demonstrated using single pulses of the free-electron laser in Hamburg (FLASH) free-electron laser at a wavelength of 13.5 nm. In a single exposure, we observe a hydrogen jet with ice fragments with a spatial resolution in the sub-micrometer range. In situ EUV imaging is expected to enable novel experimental capabilities for warm dense matter studies of micrometer-sized samples in laser-plasma experiments.
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