Laser-based X-ray and electron source for X-ray fluorescence studies

TL;DR

This paper introduces a laser-based source capable of producing both X-rays and electrons for fluorescence studies, enabling more detailed analysis of layered artworks by combining the advantages of both excitation methods.

Contribution

The work presents a novel laser-based source that can generate both X-rays and electrons, improving the analysis of layered materials compared to traditional methods.

Findings

Electrons provide superficial analysis due to limited penetration.

Combining X-ray and electron excitation yields comprehensive artwork structure insights.

Laser-based source effectively produces both excitation types.

Abstract

In this work we present a modification to conventional X-rays fluorescence using electrons as excitation source, and compare it with the traditional X-ray excitation for the study of pigments. For this purpose we have constructed a laser-based source capable to produce X-rays as well as electrons. Because of the large penetration depth of X-rays, the collected fluorescence signal is a combination of several material layers of the artwork under study. However electrons are stopped in the first layers allowing therefore a more superficial analysis. We show that the combination of both excitation sources can provide extremely valuable information about the structure of the artwork.