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Proceedings Paper

Development and demonstration of a water-window soft x-ray microscope using a Z-pinching capillary discharge source
Author(s): M. F. Nawaz; Alexandr Jancarek; Michal Nevrkla; Martin Jakub Duda; Ladislav Pina
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Paper Abstract

The development and demonstration of a soft X-ray (SXR) microscope, based on a Z-pinching capillary discharge source has been realized. The Z-pinching plasma acts as a source of SXR radiation. A ceramic capacitor bank is pulsed charged up to 80 kV, and discharged through a pre- ionized nitrogen filled ceramic capillary. The discharge current has an amplitude of ~25 kA. Working within the water-window spectral region (λ = 2.88 nm), corresponding to the 1s2-1s2p quantum transition of helium-like nitrogen (N5+), the microscope has a potential in exploiting the natural contrast existing between the K-absorption edges of carbon and oxygen as the main constituents of biological materials, and hence imaging them with high spatial resolution. The SXR microscope uses the grazing incidence ellipsoidal condenser mirror for the illumination, and the Fresnel zone plate optics for the imaging of samples onto a BI-CCD camera. The half- pitch spatial resolution of 100 nm [1] was achieved, as demonstrated by the knife-edge test. In order to enhance the photon-flux at the sample plane, a new scheme for focusing the radiation, from multiple capillary sources has been investigated. Details about the source, and the construction of the microscope are presented and discussed.

Paper Details

Date Published: 31 May 2017
PDF: 12 pages
Proc. SPIE 10235, EUV and X-ray Optics: Synergy between Laboratory and Space V, 102350P (31 May 2017); doi: 10.1117/12.2269601
Show Author Affiliations
M. F. Nawaz, Czech Technical Univ. in Prague (Czech Republic)
Alexandr Jancarek, Czech Technical Univ. in Prague (Czech Republic)
Michal Nevrkla, Czech Technical Univ. in Prague (Czech Republic)
Martin Jakub Duda, Czech Technical Univ. in Prague (Czech Republic)
Ladislav Pina, Czech Technical Univ. in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 10235:
EUV and X-ray Optics: Synergy between Laboratory and Space V
René Hudec; Ladislav Pina, Editor(s)

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