scholarly journals The SPECIES beamline at the MAX IV Laboratory: a facility for soft X-ray RIXS and APXPS

2017 ◽  
Vol 24 (1) ◽  
pp. 344-353 ◽  
Author(s):  
Samuli Urpelainen ◽  
Conny Såthe ◽  
Walan Grizolli ◽  
Marcus Agåker ◽  
Ashley R. Head ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Unique Property ◽  
Unique Combination ◽  
X Ray ◽  
Fast Switching ◽  
X Ray Scattering ◽  
And Performance ◽  
Ring Species ◽  
X Ray Absorption

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.

scholarly journals AP-XPS beamline, a platform for operando science at Pohang Accelerator Laboratory

2020 ◽  
Vol 27 (2) ◽  
pp. 507-514
Author(s):  
Geonhwa Kim ◽  
Youngseok Yu ◽  
Hojoon Lim ◽  
Beomgyun Jeong ◽  
Jouhahn Lee ◽  
...  
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Experimental System ◽  
Photon Flux ◽  
Acceptance Angle ◽  
X Ray ◽  
Pohang Accelerator Laboratory ◽  
And Performance ◽  
X Ray Absorption

Beamline 8A (BL 8A) is an undulator-based soft X-ray beamline at Pohang Accelerator Laboratory. This beamline is aimed at high-resolution ambient-pressure X-ray photoelectron spectroscopy (AP-XPS), soft X-ray absorption spectroscopy (soft-XAS) and scanning photoemission microscopy (SPEM) experiments. BL 8A has two branches, 8A1 SPEM and 8A2 AP-XPS, that share a plane undulator, the first mirror (M1) and the monochromator. The photon beam is switched between the two branches by changing the refocusing mirrors after the monochromator. The acceptance angle of M1 is kept glancing at 1.2°, and Pt is coated onto the mirrors to achieve high reflectance, which ensures a wide photon energy range (100–2000 eV) with high resolution at a photon flux of ∼1013 photons s−1. In this article, the main properties and performance of the beamline are reported, together with selected experiments performed on the new beamline and experimental system.

scholarly journals Simultaneous ambient pressure x-ray photoelectron spectroscopy and grazing incidence x-ray scattering in gas environments

2021 ◽  
Vol 92 (4) ◽  
pp. 044102
Author(s):  
Heath Kersell ◽  
Pengyuan Chen ◽  
Henrique Martins ◽  
Qiyang Lu ◽  
Felix Brausse ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals RISING beamline (BL28XU) for rechargeable battery analysis

2013 ◽  
Vol 21 (1) ◽  
pp. 268-272 ◽  
Author(s):  
H. Tanida ◽  
K. Fukuda ◽  
H. Murayama ◽  
Y. Orikasa ◽  
H. Arai ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Rechargeable Batteries ◽  
Time Range ◽  
Rechargeable Battery ◽  
X Ray Diffraction ◽  
Battery Charging ◽  
X Ray ◽  
And Performance ◽  
X Ray Absorption

The newly installed BL28XU beamline at SPring-8 is dedicated toin situstructural and electronic analysis of rechargeable batteries. It supports the time range (1 ms to 100 s) and spatial range (1 µm to 1 mm) needed for battery analysis. Electrochemical apparatus for battery charging and discharging are available in experimental hutches and in a preparation room. Battery analysis can be carried out efficiently and effectively using X-ray diffraction, X-ray absorption fine-structure analysis and hard X-ray photoelectron spectroscopy. Here, the design and performance of the beamline are described, and preliminary results are presented.

scholarly journals Upgrade of the SPECIES beamline at the MAX IV Laboratory

2021 ◽  
Vol 28 (2) ◽  
pp. 588-601
Author(s):  
Esko Kokkonen ◽  
Felipe Lopes da Silva ◽  
Mikko-Heikki Mikkelã ◽  
Niclas Johansson ◽  
Shih-Wen Huang ◽  
...  
Keyword(s):  
Storage Ring ◽  
Time Resolution ◽  
Photoelectron Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Ambient Pressure ◽  
Elevated Pressure ◽  
X Ray ◽  
X Ray Scattering ◽  
Unique Capability ◽  
Ray Scattering

The SPECIES beamline has been transferred to the new 1.5 GeV storage ring at the MAX IV Laboratory. Several improvements have been made to the beamline and its endstations during the transfer. Together the Ambient Pressure X-ray Photoelectron Spectroscopy and Resonant Inelastic X-ray Scattering endstations are capable of conducting photoelectron spectroscopy in elevated pressure regimes with enhanced time-resolution and flux and X-ray scattering experiments with improved resolution and flux. Both endstations offer a unique capability for experiments at low photon energies in the vacuum ultraviolet and soft X-ray range. In this paper, the upgrades on the endstations and current performance of the beamline are reported.

scholarly journals Vibrational resonant inelastic X-ray scattering in liquid acetic acid: a ruler for molecular chain lengths

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Viktoriia Savchenko ◽  
Iulia Emilia Brumboiu ◽  
Victor Kimberg ◽  
Michael Odelius ◽  
Pavel Krasnov ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Acetic Acid ◽  
Molecular Chain ◽  
X Ray ◽  
X Ray Scattering ◽  
Localized Excitations ◽  
Vibrational Excitations ◽  
Chain Lengths ◽  
X Ray Absorption ◽  
Ray Scattering

AbstractQuenching of vibrational excitations in resonant inelastic X-ray scattering (RIXS) spectra of liquid acetic acid is observed. At the oxygen core resonance associated with localized excitations at the O–H bond, the spectra lack the typical progression of vibrational excitations observed in RIXS spectra of comparable systems. We interpret this phenomenon as due to strong rehybridization of the unoccupied molecular orbitals as a result of hydrogen bonding, which however cannot be observed in x-ray absorption but only by means of RIXS. This allows us to address the molecular structure of the liquid, and to determine a lower limit for the average molecular chain length.

scholarly journals Crystalline and magnetic structure of Ba2CuO3+δ investigated by x-ray absorption spectroscopy and resonant inelastic x-ray scattering

2020 ◽  
pp. 1353810
Author(s):  
Roberto Fumagalli ◽  
Abhishek Nag ◽  
Stefano Agrestini ◽  
Mirian Garcia-Fernandez ◽  
Andrew C. Walters ◽  
...  
Keyword(s):  
Magnetic Structure ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ray Scattering
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