Published in

International Union of Crystallography, Journal of Synchrotron Radiation, 4(26), p. 1031-1036, 2019

DOI: 10.1107/s1600577519004272

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Scientific instruments for soft X-ray photon-in/photon-out spectroscopy on the PAL-XFEL

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

An overview is given of the soft X-ray photon-in/photon-out instruments on the free-electron laser (FEL) beamline at the Pohang Accelerator Laboratory, and selected commissioning results are presented. The FEL beamline provides a photon energy of 270 to 1200 eV, with an energy bandwidth of 0.44%, an energy of 200 µJ per pulse and a pulse width of <50 fs (full width at half-maximum). The estimated total time resolution between optical laser and X-ray pulses is <100 fs. Instruments for X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) have been set up. X-ray magnetic circular dichroism spectra for a Co/Pt multilayer film and RIXS spectra for α-Fe2O3(100) have been obtained and the performance of the spectrometer has been evaluated.