Demonstration of One-shot Spatially-resolved X-ray Absorption Spectroscopy Using Wavelength-dispersed Soft X-rays

2017 ◽  
Vol 46 (1) ◽  
pp. 71-73
Author(s):  
Kenta Amemiya ◽  
Masako Sakamaki
Keyword(s):  
Absorption Spectroscopy ◽  
X Rays ◽  
X Ray ◽  
Spatially Resolved ◽  
X Ray Absorption

scholarly journals Soft X-ray absorption spectroscopy in the low-energy region explored using an argon gas window

2020 ◽  
Vol 27 (4) ◽  
pp. 959-962
Author(s):  
Masanari Nagasaka
Keyword(s):  
Absorption Spectroscopy ◽  
Energy Region ◽  
Low Energy ◽  
X Rays ◽  
Argon Gas ◽  
X Ray ◽  
First Order ◽  
Helium Gas ◽  
Transmission Window ◽  
X Ray Absorption

The soft X-ray region below 200 eV is important for investigating chemical and biological phenomena since it covers K-edges of Li and B and L-edges of Si, P, S and Cl. Helium gas is generally used as the soft X-ray transmission window for soft X-ray absorption spectroscopy (XAS) under atmospheric conditions. However, the helium gas window cannot be applied to XAS in the low-energy region since transmitted soft X-rays mostly consist of high-order X-rays due to the low transmission of first-order X-rays. In this study, the argon gas window is proposed as a new soft X-ray transmission window in the low-energy region. High-order X-rays are removed by the absorption of the Ar L-edge (240 eV), and first-order X-rays become the major contribution of transmitted soft X-rays in the low-energy region. Under atmospheric argon conditions, the double-excitation Rydberg series of helium gas (60 eV), Si L-edge XAS of an Si3N4 membrane (100 eV) and S L-edge XAS of dimethyl sulfoxide gas (170 eV) are successfully measured, indicating that the argon gas window is effective for soft X-ray transmission in the low-energy region from 60 eV to 240 eV.

scholarly journals Spatially resolved X-ray absorption spectroscopy investigation of individual cation-intercalated multi-layered Ti3C2Tx MXene particles

2020 ◽  
Vol 530 ◽  
pp. 147157
Author(s):  
Ameer Al-Temimy ◽  
Florian Kronast ◽  
Mohamad-Assaad Mawass ◽  
Katherine A. Mazzio ◽  
Kaitlyn Prenger ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
X Ray ◽  
Spatially Resolved ◽  
X Ray Absorption

scholarly journals XMM-Newton observations of the non-thermal supernova remnant HESS J1731−347 (G353.6-0.7)

2017 ◽  
Vol 608 ◽  
pp. A23 ◽  
Author(s):  
V. Doroshenko ◽  
G. Pühlhofer ◽  
A. Bamba ◽  
F. Acero ◽  
W. W. Tian ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
Galactic Plane ◽  
Thermal Power ◽  
X Rays ◽  
Absorption Column ◽  
X Ray ◽  
Spatially Resolved ◽  
Absorbing Material ◽  
First Time ◽  
X Ray Absorption

We report on the analysis of XMM-Newton observations of the non-thermal shell-type supernova remnant HESS J1731−347 (G353.6-0.7). For the first time the complete remnant shell has been covered in X-rays, which allowed direct comparison with radio and TeV observations. We carried out a spatially resolved spectral analysis of XMM-Newton data and confirmed the previously reported non-thermal power-law X-ray spectrum of the source with negligible variations of spectral index across the shell. On the other hand, the X-ray absorption column is strongly variable and correlates with the CO emission thus confirming that the absorbing material must be in the foreground and reinforcing the previously suggested lower limit on distance. Finally, we find that the X-ray emission of the remnant is suppressed towards the Galactic plane, which points to lower shock velocities in this region, likely due to the interaction of the shock with the nearby molecular cloud.

Time-resolved soft x-ray absorption spectroscopy of silicon using femtosecond laser plasma x rays

1999 ◽  
Vol 75 (16) ◽  
pp. 2350-2352 ◽  
Author(s):  
Hidetoshi Nakano ◽  
Yoshinori Goto ◽  
Peixiang Lu ◽  
Tadashi Nishikawa ◽  
Naoshi Uesugi
Keyword(s):  
Femtosecond Laser ◽  
Absorption Spectroscopy ◽  
Laser Plasma ◽  
X Rays ◽  
Time Resolved ◽  
X Ray ◽  
Femtosecond Laser Plasma ◽  
X Ray Absorption

scholarly journals Oxygen Hole Character and Lateral Homogeneity in PrNiO2+δ Thin Films

2022 ◽  
Vol 9 ◽  
Author(s):  
K. Fürsich ◽  
R. Pons ◽  
M. Bluschke ◽  
R. A. Ortiz ◽  
S. Wintz ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Spectroscopy ◽  
Reduction Process ◽  
Thin Film Sample ◽  
Film Sample ◽  
Soft Chemistry ◽  
X Ray ◽  
Spatially Resolved ◽  
Oxygen Hole ◽  
X Ray Absorption

Using x-ray absorption spectroscopy with lateral resolution from the submillimeter to submicrometer range, we investigate the homogeneity, the chemical composition, and the nickel 3d- oxygen 2p charge transfer in topotactically reduced epitaxial PrNiO2+δ thin films. To this end, we use x-ray absorption spectroscopy in a standard experimental setup and in a soft x-ray microscope to probe the element and spatially resolved electronic structure modifications through changes of the nickel-2p and oxygen-1s absorption spectrum upon soft-chemistry reduction. We find that the reduction process is laterally homogeneous across a partially reduced PrNiO2+δ thin film sample for length scales down to 50 nm.

The TES beamline (8-BM) at NSLS-II: tender-energy spatially resolved X-ray absorption spectroscopy and X-ray fluorescence imaging

2019 ◽  
Vol 26 (6) ◽  
pp. 2064-2074 ◽  
Author(s):  
Paul Northrup
Keyword(s):  
Energy Range ◽  
Fluorescence Imaging ◽  
Absorption Spectroscopy ◽  
Small Sample ◽  
Energy Calibration ◽  
Helium Atmosphere ◽  
X Ray ◽  
Spatially Resolved ◽  
X Ray Absorption

The tender-energy X-ray spectroscopy (TES) beamline at the National Synchrotron Light Source II (NSLS-II) is now operational for general users. Its scientific mission includes static and in situ X-ray fluorescence imaging and spatially resolved X-ray absorption spectroscopy for characterization of complex heterogeneous, structured and dynamic natural or engineered materials and systems. TES is optimized for the tender-energy range, offering routine operations from 2.0 to 5.5 keV, with capabilities to reach down to 1.2 or up to 8 keV with configuration change. TES is designed as an extended X-ray absorption fine-structure microprobe (EXAFS microprobe) for applications of micrometre-scale EXAFS spectroscopy to heterogeneous samples. Beam size is user-tunable from ∼2 to 25 µm. Energy may be scanned on-the-fly or in traditional step scanning. Importantly, the position of the microbeam at the sample location does not move significantly during energy scanning or when changing energy across the entire routine energy range. This enables full EXAFS of a particle or domain the same size as the probe beam, and measurement of the same spot at different energies. In addition, there is no measureable drift in energy calibration (repeatability) scan-to-scan and over 24 h. This is critical where simultaneous calibration measurements are generally not feasible, and for speciation mapping where precise and stable control of incident energy is essential. The sample environment is helium atmosphere at room pressure with infrastructure for in situ electrochemistry and catalysis in small sample cells or microreactors. As the first bend-magnet beamline at NSLS-II, noteworthy commissioning aspects are described. Example measurements are presented to illustrate its capabilities.

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