Early commissioning results for spectroscopic X-ray Nano-Imaging Beamline BL 7C sXNI at PLS-II
| Autor: | Sangsul Lee, Jun Lim, Ik-Hwan Kwon, Sechang Kang, Jae Young Kim, Sung Sun Yang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
030103 biophysics Nuclear and High Energy Physics medicine.medical_specialty Radiation Materials science business.industry X-ray Reconstruction algorithm 02 engineering and technology 021001 nanoscience & nanotechnology XANES law.invention Spectral imaging 03 medical and health sciences Optics Beamline law medicine Tomography 0210 nano-technology business Instrumentation Image resolution Monochromator |
| Zdroj: | Journal of Synchrotron Radiation. 24:1276-1282 |
| ISSN: | 1600-5775 |
| Popis: | 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 rootsin vivoand 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. |
| Databáze: | OpenAIRE |
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