A sensitive EUV Schwarzschild microscope for plasma studies with sub-micrometer resolution
- Zastrau, Ulf
- Rödel, C.
- Förster, E.
- Gamboa, E.
- Gericke, D. O.
- Göde, S.
- Grote-Fortmann, C.
- Hilbert, V.
- Kazak, L.
- Laarmann, T.
- Lee, H. J.
- Mabey, P.
- Nakatsutsumi, M.
- Martinez, F.
- Meiwes-Broer, K.-H.
- Pauer, H.
- Perske, M.
- Przystawik, A.
- Roling, S.
- Skruszewicz, S.
- Shihab, Mohammed
- Tiggesbäumker, J.
- Toleikis, S.
- Feigl, T.
- Wünsche, M.
- Zacharias, H.
- Glenzer, S. H.
- Gregori, G.
- Appel, K.
- Chen, B.
- Döppner, T.
- Fennel, T.
- Fiedler, T.
- Fletcher, Luke
DOIAbstract
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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