The SPECIES beamline at the MAX IV Laboratory: a facility for soft X-ray RIXS and APXPS
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- 作者：Samuli Urpelainen ; Conny Så ; the ; Walan Grizolli ; Marcus Agå ; ker ; Ashley R. Head ; Margit Andersson ; Shih-Wen Huang ; Brian N. Jensen ; Erik Wallé ; n ; Hamed Tarawneh ; Rami Sankari ; Ralf Nyholm ; Mirjam Lindberg ; Peter Sjö ; blom ; Niclas Johansson ; Benjamin N. Reinecke ; M. Alif Arman ; Lindsay R. Merte ; Jan Knudsen ; Joachim Schnadt ; Jesper N. Andersen and Franz Hennies
- 关键词：RIXS ; APXPS ; beamlines ; MAX IV
- 刊名：Journal of Synchrotron Radiation
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：24
- 期：1
- 页码：344-353
- 全文大小：1058K
- ISSN：1600-5775
文摘
SPECIES is an undulator-based soft X-ray beamline that replaced the old I511 beamline at the MAX II storage ring. SPECIES is aimed at high-resolution ambient-pressure X-ray photoelectron spectroscopy (APXPS), near-edge X-ray absorption fine-structure (NEXAFS), X-ray emission spectroscopy (XES) and resonant inelastic X-ray scattering (RIXS) experiments. The beamline has two branches that use a common elliptically polarizing undulator and monochromator. The beam is switched between the two branches by changing the focusing optics after the monochromator. Both branches have separate exit slits, refocusing optics and dedicated permanent endstations. This allows very fast switching between two types of experiments and offers a unique combination of the surface-sensitive XPS and bulk-sensitive RIXS techniques both in UHV and at elevated ambient-pressure conditions on a single beamline. Another unique property of the beamline is that it reaches energies down to approximately 27 eV, which is not obtainable on other current APXPS beamlines. This allows, for instance, valence band studies under ambient-pressure conditions. In this article the main properties and performance of the beamline are presented, together with selected showcase experiments performed on the new setup.