Open AccessEarly commissioning results for spectroscopic X‐ray Nano‐Imaging Beamline BL 7C sXNI at PLS‐II
Author(s) -
Lee Sangsul,
Kwon Ik hwan,
Kim Jae-Young,
Yang Sung-Sun,
Kang Sechang,
Lim Jun
Publication year - 2017
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577517013972
Subject(s) - beamline , xanes , monochromator , optics , absorption (acoustics) , materials science , lithium (medication) , x ray fluorescence , beam (structure) , analytical chemistry (journal) , spectral line , physics , chemistry , fluorescence , wavelength , chromatography , astronomy , medicine , endocrinology
For spectral imaging of chemical distributions using X‐ray absorption near‐edge structure (XANES) spectra, a modified double‐crystal monochromator, a focusing plane mirrors system and a newly developed fluorescence‐type X‐ray beam‐position monitoring and feedback system have been implemented. This major hardware upgrade provides a sufficiently stable X‐ray source during energy scanning of more than hundreds of eV for acquisition of reliable XANES spectra in two‐dimensional and three‐dimensional images. In recent pilot studies discussed in this paper, heavy‐metal uptake by plant roots in vivo and iron's phase distribution in the lithium–iron–phosphate cathode of a lithium‐ion battery have been imaged. Also, the spatial resolution of computed tomography has been improved from 70 nm to 55 nm by means of run‐out correction and application of a reconstruction algorithm.