Results 11 to 20 of about 59,811 (258)

Approach to electrochemical modulating differential extended X-ray absorption fine structure [PDF]

Journal of Synchrotron Radiation, 2022
The differential XAFS technique holds promise for detecting surface changes, which benefits many chemical applications. Phase-sensitive detection (PSD) analysis based on modulated excitation spectroscopy experiments is expected to obtain a high-quality ...
Wenjie Xu, Guikai Zhang, Hongwei Shou, Jia Zhou, Shuangming Chen, Shengqi Chu, Jing Zhang, Li Song   +7 more
doaj   +2 more sources

A polycrystalline diamond micro-detector for X-ray absorption fine-structure measurements [PDF]

Journal of Synchrotron Radiation, 2022
The microminiaturization of detectors used to record the intensity of X-ray beams is very favorable for combined X-ray experimental techniques. In this paper, chemical-vapor-deposited (CVD) polycrystalline diamond film was used to fabricate a micro ...
Lei Yao, Yunpeng Liu, Bingjie Wang, Lixiong Qian, Xueqing Xing, Guang Mo, Zhongjun Chen, Zhonghua Wu   +7 more
doaj   +2 more sources

Extended X-Ray Absorption Fine Structure of ZrW2O8: Theory vs. Experiment [PDF]

Frontiers in Chemistry, 2018
Extended x-ray absorption fine structure (EXAFS) is well-suited for investigations of structure and disorder of complex materials. Recently, experimental measurements and analysis of EXAFS have been carried out to elucidate the mechanisms responsible for
Fernando D. Vila, John W. Spencer, Joshua J. Kas, John J. Rehr, Frank Bridges   +4 more
doaj   +2 more sources

Extended X-ray absorption fine structure of dynamically-compressed copper up to 1 terapascal [PDF]

Nature Communications, 2023
Large laser facilities have recently enabled material characterization at the pressures of Earth and Super-Earth cores. However, the temperature of the compressed materials has been largely unknown, or solely relied on models and simulations, due to lack
H. Sio, A. Krygier, D. G. Braun, R. E. Rudd, S. A. Bonev, F. Coppari, M. Millot, D. E. Fratanduono, N. Bhandarkar, M. Bitter, D. K. Bradley, P. C. Efthimion, J. H. Eggert, L. Gao, K. W. Hill, R. Hood, W. Hsing, N. Izumi, G. Kemp, B. Kozioziemski, O. L. Landen, K. Le Galloudec, T. E. Lockard, A. Mackinnon, J. M. McNaney, N. Ose, H.-S. Park, B. A. Remington, M. B. Schneider, S. Stoupin, D. B. Thorn, S. Vonhof, C. J. Wu, Y. Ping   +33 more
doaj   +2 more sources

Study on the coordination structure of pt sorbed on bacterial cells using x-ray absorption fine structure spectroscopy. [PDF]

PLoS ONE, 2015
Biosorption has been intensively investigated as a promising technology for the recovery of precious metals from solution. However, the detailed mechanism responsible for the biosorption of Pt on a biomass is not fully understood because of a lack of ...
Kazuya Tanaka, Naoko Watanabe
doaj   +2 more sources

Novel Ni-Doped Bismuth–Magnesium Tantalate Pyrochlores: Structural and Electrical Properties, Thermal Expansion, X‑ray Photoelectron Spectroscopy, and Near-Edge X‑ray Absorption Fine Structure Spectra [PDF]

ACS Omega, 2021
Nadezhda A. Zhuk, Maria G. Krzhizhanovskaya, Nikolay A. Sekushin, Vladislav V. Kharton, Alexandra V. Koroleva, Sergey V. Nekipelov, Danil V. Sivkov, Viktor N. Sivkov, Boris A. Makeev, Alexey M. Lebedev, Ratibor G. Chumakov, Sofia Yu. Kovalenko   +11 more
doaj   +2 more sources

Superstructure of Fe5–xGeTe2 Determined by Te K‑Edge Extended X‑ray Absorption Fine Structure and Te Kα X‑ray Fluorescence Holography [PDF]

ACS Omega
Ritsuko Eguchi, Halubai Sekhar, Koji Kimura, Hirokazu Masai, Naohisa Happo, Mitsuki Ikeda, Yuki Yamamoto, Masaki Utsumi, Hidenori Goto, Yasuhiro Takabayashi, Hiroo Tajiri, Koichi Hayashi, Yoshihiro Kubozono   +12 more
doaj   +2 more sources

X-ray-absorption fine structure in embedded atoms [PDF]

Physical Review B, 1994
Oscillatory structure is found in the atomic background absorption in x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from scattering within an embedded atom, and is analogous to the Ramsauer-Townsend effect. Calculations and measurements confirm the existence of AXAFS and show that it can dominate contributions such as multi ...
Rehr, J. J., Booth, C. H., Bridges, F., Zabinsky, S. I.   +3 more
openaire   +3 more sources

Database of ab initio L-edge X-ray absorption near edge structure

Scientific Data, 2021
Measurement(s) near-edge X-ray absorption fine structure spectroscopy • L-edge XANES Technology Type(s) X-ray absorption spectroscopy Machine-accessible metadata file describing the reported data: https://doi.org/10.6084/m9.figshare ...
Yiming Chen, Chi Chen, Chen Zheng, Shyam Dwaraknath, Matthew K. Horton, Jordi Cabana, John Rehr, John Vinson, Alan Dozier, Joshua J. Kas, Kristin A. Persson, Shyue Ping Ong   +11 more
doaj   +1 more source

Understanding atomic x-ray absorption fine structure in x-ray absorption spectra [PDF]

Journal of Physics: Condensed Matter, 1998
The origin and important parameters determining the intensity of atomic x-ray absorption fine structure (AXAFS) are described both in chemical and physical terms. A full mathematical derivation is presented and new criteria are given for removal of the background to extract the total (EXAFS and AXAFS) from the experimental absorption cross-section. The
Koningsberger, D.C., Ramaker, D.E., Mojet, B.L., O'Grady, W.E.   +3 more
openaire   +2 more sources