High-resolution compact X-ray microscopy |
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Authors: | P A C TAKMAN H STOLLBERG G A JOHANSSON† A HOLMBERG M LINDBLOM & H M HERTZ |
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Affiliation: | Biomedical and X-Ray Physics, Royal Institute of Technology/Albanova, SE-106 91 Stockholm, Sweden |
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Abstract: | We demonstrate compact full‐field soft X‐ray transmission microscopy with sub 60‐nm resolution operating at λ= 2.48 nm. The microscope is based on a 100‐Hz regenerative liquid‐nitrogen‐jet laser‐plasma source in combination with a condenser zone plate and a micro‐zone plate objective for high‐resolution imaging onto a 2048 × 2048 pixel CCD detector. The sample holder is mounted in a helium atmosphere and allows imaging of both dry and wet specimens. The microscope design enables fast sample switching and the sample can be pre‐aligned using a visible‐light microscope. High‐quality images can be acquired with exposure times of less than 5 min. We demonstrate the performance of the microscope using both dry and wet samples. |
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Keywords: | Compact laser plasma liquid-jet soft x-ray microscopy water window zone plate optics |
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