Increasing the sensitivity of micro X-ray fluorescence spectroscopy through an optimized adaptation of polycapillary lenses to a liquid metal jet source

Leona J Bauer,Frank Förste,Richard Gnewkow,Daniel Grötzsch,Semfira Bjeoumikhova,Ioanna Mantouvalou,Birgit Kanngießer

doi:10.1039/d1ja00295c

Abstract

The combination of optimally adapted polycapillary lenses and highly brilliant liquid metal jet sources leads to significant enhancement in the sensitivity for transition metals using laboratory μXRF.

Highlights

Micro-X-ray uorescence spectroscopy (mXRF) and confocal micro-X-ray fluorescence spectroscopy (mXRF) are non-destructive techniques which enable the measurement of elemental distributions in one, two or three dimensions with a resolution in the micrometer regime.[1]
Micro-X-ray uorescence spectroscopy and confocal micro-X-ray fluorescence spectroscopy (mXRF) are non-destructive techniques which enable the measurement of elemental distributions in one, two or three dimensions with a resolution in the micrometer regime.[1]
The lens which was especially designed for the liquid metal jet sources (LMJS) shows the best effective transmission in combination with a relatively small exit focal spot size of (22 Æ 5) mm for Fe K radiation

Summary

Introduction

Micro-X-ray uorescence spectroscopy (mXRF) and confocal mXRF are non-destructive techniques which enable the measurement of elemental distributions in one, two or three dimensions with a resolution in the micrometer regime.[1]. The small source spot size and the energy of the characteristic K lines of Ga which can be transported very efficiently through polycapillary lenses[19] allow in theory to specially adapt the parameters of the lens to the LMJS properties resulting in a very efficient excitation of transition metals from scandium to copper.

Results

Conclusion