TY  - JOUR
AU  - Hoesch, Moritz
AU  - Seltmann, Jörn
AU  - Trinter, Florian
AU  - Kühn, Steffen
AU  - Togawa, Moto
AU  - Steinbrügge, René
AU  - Bernitt, Sonja
AU  - Crespo López-Urrutia, José R.
TI  - Highly Charged Ions for High-Resolution Soft X-ray Grating Monochromator Optimisation
JO  - Journal of physics / Conference Series
VL  - 2380
IS  - 1
SN  - 1742-6588
CY  - Bristol
PB  - IOP Publ.
M1  - PUBDB-2023-00653
SP  - 012086 
PY  - 2022
AB  - The energy-resolving performance of a synchrotron radiation monochromator can be characterised by measuring the fluorescence response of a gas in scans across characteristic absorption lines. Here, we describe a method using exceptionally narrow absorption features in the soft x-ray range. The features belong to helium-like ions and examples of the transition 1s → 2p in O<sup>6+</sup> and Ne<sup>8+</sup> are shown. We describe the instrument PolarX-EBIT and show typical data. A performance with ten times sharper effective feature width, when compared to neutral-gas absorption features, is demonstrated. 
T2  - 14th International Conference on Synchrotron Radiation Instrumentation
CY  - 28 Mar 2022 - 1 Apr 2022, Hamburg (Germany)
Y2  - 28 Mar 2022 - 1 Apr 2022
M2  - Hamburg, Germany
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
DO  - DOI:10.1088/1742-6596/2380/1/012086
UR  - https://bib-pubdb1.desy.de/record/570290
ER  -