Compound focusing mirror and X-ray waveguide optics for coherent imaging and nano-diffraction

Abstract

A compound optical system for coherent focusing and imaging at the nanoscale is reported, realised by high-gain fixed-curvature elliptical mirrors in combination with X-ray waveguide optics or different cleaning apertures. The key optical concepts are illustrated, as implemented at the Göttingen Instrument for Nano-Imaging with X-rays (GINIX), installed at the P10 coherence beamline of the PETRA III storage ring at DESY, Hamburg, and examples for typical applications in biological imaging are given. Characteristic beam configurations with the recently achieved values are also described, meeting the different requirements of the applications, such as spot size, coherence or bandwidth. The emphasis of this work is on the different beam shaping, filtering and characterization methods.

Advances in fabrication of X-ray waveguides

“…The dark horizontal stripes are the gaps between different detector modules. The measurement was performed at the GINIX (Göttingen Instrument for Nano-Imaging with X-rays [32]) endstation (P10 beamline at DESY, Hamburg) at E ph = 7.9 keV. The CCD detector (Pilatus 300k, DECTRIS) was positioned 5.1 m behind the WG chip, with the x-rays propagating about 1 m in air before entering an evacuated tube through a Be foil.…”

Three-dimensional single-cell imaging with X-ray waveguides in the holographic regime

“…The generic setup is sketched in Fig. 2(a) and described in detail in Salditt et al (2015). An X-ray waveguide has been used as the beamdefining optics.…”

Investigating Cellular Nanoscale with X-rays

“…2.20, for a more detail representation, the reader can refer to ref. [170]. The beam of 7.9 keV energy is produced by a 5 m long undulator and a cryo-cooled double crystal monochromator (Si-111).…”

“…We performed the X-ray nano-diffraction experiments at the coherence applications beamline P10 at the PETRA III storage ring (DESY, Hamburg, Germany) and used the Göttingen Instrument for Nano Imaging with X-rays (GINIX) [169,170].…”

“…The Göttingen Instrument for Nano Imaging with X-rays (GINIX) [169,170] was used at the P10 coherence applications beamline at the PETRA III (Positron-Elektron-TandemRing-Anlage) storage ring. A simplified schema of the setup is represented in Fig.…”