Open AccessCompact system for near edge X-ray fine structure (NEXAFS) spectroscopy using a laser-plasma light source
Author(s) -
P. Wachulak,
Martin Duda,
Andrzej Bartnik,
A. Sarzyński,
Łukasz Węgrzyński,
Michał Nowak,
A. Jančárek,
Henryk Fiedorowicz
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.008260
Subject(s) - optics , laser , materials science , xanes , spectrometer , spectroscopy , absorption (acoustics) , plasma , x ray spectroscopy , krypton , synchrotron , argon , atomic physics , physics , quantum mechanics
We present a compact laboratory system for near edge soft X-ray fine structure (NEXAFS) spectroscopy that was developed using a laser-plasma light source. The source is based on a double stream gas puff target. The plasma is formed by the interaction of a laser beam with the double stream gas puff target approach. The laser plasma source was optimized for efficient soft X-ray emission from a krypton/helium target in the range of 1.5 to 5 nm wavelength. This emission is used to acquire simultaneously the emission and absorption spectra of soft X-ray light from the source and from the investigated sample using a grazing incidence spectrometer. The measurements in the transmission mode reveal the features near the carbon K-α absorption edge of thin PET film. From those features, the composition of the sample was successfully obtained. The data are in agreement with synchrotron measurements. In the paper, the detailed information about the source, its optimization, the system, spectral measurements and the results are presented and discussed.