New Scientific Article published in X-Ray Spectrometry:

“Soft X-Ray Absorption Spectroscopy With a Flat Liquid Jet in Vacuum Using a Table-Top Laser-Induced Plasma Source”

Date: 19.01.2025

We are pleased to announce the publication of a technical research article in X-Ray Spectrometry describing the integration of a flat liquid jet sample delivery system into a compact soft X-ray absorption spectrometer utilizing a table-top laser-induced plasma source.

The study details the formation of a micrometer-thin, high-speed flat liquid jet by the collision of two cylindrical liquid streams in vacuum, producing a stable and continuous sample lamella ideally suited for transmission-mode soft X-ray absorption spectroscopy using krypton plasma emission.

The paper further reports experimental results on aqueous solutions of iron salts, capturing near-edge X-ray absorption fine structure (NEXAFS) spectra over a broad range from the nitrogen K-edge to the iron L-edge. Importantly, the team demonstrated the ability to quantitatively distinguish between Fe²⁺ and Fe³⁺ oxidation states at the iron L-edge, offering insights into solution chemistry and electronic structure.

Comparative analysis with similar measurements obtained at synchrotron facilities indicates that the table-top system can achieve synchrotron-comparable performance, significantly expanding accessibility for soft X-ray absorption spectroscopy in laboratory environments.

The article is published with open access.

Citation:

Jonathan Holburg, Stephan Figul, Ales Charvat, Hendrik Bluhm, Bernd Abel, Gerd Marowsky, Dong-Du Mai, and Klaus Mann “Soft X-Ray Absorption Spectroscopy With a Flat Liquid Jet in Vacuum Using a Table-Top Laser-Induced Plasma Source”, X-Ray Spectroscopy, 2025 (in press). https://doi.org/10.1002/xrs.3474