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High-numerical-aperture macroscope optics for time-resolved experiments.

Minna Bührer1, Marco Stampanoni1, Xavier Rochet2

  • 1Swiss Light Source, Paul Scherrer Institut, Forschungsstrasse 111, Villigen 5232, Switzerland.

Journal of Synchrotron Radiation
|July 6, 2019
PubMed
Summary
This summary is machine-generated.

A new macroscope optics system significantly enhances X-ray tomographic microscopy. This advanced system improves both speed and resolution for dynamic process studies.

Keywords:
X-ray tomographic microscopyhigh numerical aperture opticsimage qualityoptics characterization

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Area of Science:

  • Materials Science
  • Physics
  • Microscopy

Background:

  • High-resolution X-ray tomographic microscopy requires advanced optics for dynamic and sensitive sample imaging.
  • Existing imaging setups at beamlines have limitations in efficiency and resolution for time-resolved studies.

Purpose of the Study:

  • To introduce and characterize a novel custom-made macroscope optics for high-resolution, time-resolved X-ray tomographic microscopy.
  • To evaluate the performance of the new macroscope against existing systems for different imaging resolutions.

Main Methods:

  • Development and implementation of a modular macroscope with 4x magnification and a numerical aperture of 0.35.
  • Characterization of the macroscope's performance in both horizontal and vertical configurations.
  • Comparative analysis with existing high-spatial and high-temporal resolution imaging setups at the TOMCAT beamline.

Main Results:

  • The novel macroscope demonstrates superior performance over previous systems for both high-spatial and high-temporal resolution settings.
  • For time-resolved imaging, efficiency increased 4-fold with a 6-fold improvement in spatial resolution.
  • For high-spatial-resolution imaging, efficiency increased up to 8.5-fold with a 1.5-fold spatial resolution improvement.

Conclusions:

  • The new macroscope optics offers high efficiency, improved spatial resolution, and excellent image quality.
  • Enables routine 10-20 Hz high-resolution tomographic studies, advancing investigations of dynamic processes and radiation-sensitive samples.