Near-Edge X-Ray Absorption Fine Structure Spectroscopy of Agarose with a Compact Laser Plasma Soft X-Ray Source

Abstract

In this work, we demonstrate near-edge X-ray absorption fine structure spectroscopy of agarose with a compact laboratory laser-plasma soft X-ray source. The source is based on a double stream gas puff target irradiated by nanosecond laser pulses. The emission spectra of the source and the absorption spectra of the investigated sample were measured simultaneously using a flat-field spectrometer. Soft X-ray emission from a krypton/helium target in the range between 1.5 and 5 nm was applied as the source. The transmission measurements revealed the specific spectral features near the carbon K − α absorption edge corresponding well to the results obtained with synchrotron radiation.

Compact NEXAFS System Based on Laser-Plasma Soft X-ray Light Source for the Analysis of Barium Edges in a B+BaF2 Optical Filter

“…The measurements were performed on a setup previously presented in [15]. A significant modification was the change of the electromagnets, which resulted in different valve opening characteristics than in previous papers.…”