What question did this study set out to answer?

This research aims to explore the capabilities of new polycapillary lenses for advanced elemental mapping and imaging.

March 5, 2026Open Access

Elemental Mapping and Micro-Imaging by X-Ray Capillary Optics

Key Points

This research aims to explore the capabilities of new polycapillary lenses for advanced elemental mapping and imaging.
Experimental investigations of novel polycapillary lenses
Use of confocal optical configuration
Engagement of a second polycapillary lens with an SDD detector for imaging
Design of a compact XRF spectrometer with improved resolution
Achieved spatial resolution of 6 μm limited by CCD pixel size
Developed imaging capabilities for extended samples around 3 mm
Successfully designed a prototype XRF spectrometer with spatial resolution under 100 μm

Abstract

Many experiments have recently revealed the advantages of "confocal" optical configuration for the fluorescence studies. Indeed, this peculiar layout enables micro X-ray fluorescence mapping simultaneously with X-ray imaging. In this letter the results of experimental investigations for novel polycapillary lenses are presented. The recorded image of characterized extended sample (⋍ 3 mm) with a 6 μm spatial resolution, limited by the CCD pixel size, is shown. The use of a second polycapillary lens in the confocal scheme followed by a SDD detector provides an additional option for elemental studies. A prototype of compact XRF spectrometer with a spatial resolution less than 100 μm has been designed.

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