The XAFS beamline BL01B1 at SPring-8

Abstract

An x-ray absorption fine-structure (XAFS) spectroscopy beamline, BL01B1, was installed at a bending magnet source at SPring-8 and has been open to users since October 1997. It was designed for XAFS experiments covering a wide energy range. Position tables and automatical control programs were established to adjust the x-ray optics and achieve the designed performance of the beamline under each experimental condition. This has enabled conventional XAFS measurements to be made with a good data quality from 4.5 to 110 keV. Keywords: XAFS; high-energy; beamlines.143 radiation light will be reported elsewhere. The results show that the target specifications for the measured beam have almost been completely achieved except for sagittal focusing: a photon flux of 109-10 ~ phs/s with AE/E of <2x 104, a vertical beam size focused by a mirror of < 0.2 mm, and a ratio of the higher harmonics contaminant of < 10 .5 with mirrors.To achieve the designed performance of the beamline in a wide energy range, the beamline optics should be adjusted to the optimal position for each experiment. Because rearranging the monochromator and/or mirrors involves the realignment of many components, such rearranging can be done a few times per day. To achieve quick and easy adjustment, we prepared tables at the positions of the optical components and developed automatic control programs. This report gives an overview of the beamline status and some representative results highlighting the performance of BL01B 1.

Fluorescence XAFS analysis of local structures in iodine-doped Zn1-xCrxTe

“…As increasing the temperature of the CdI 2 cell, the iodine concentration increases. The XAFS measurements were performed at the bending-magnet beam line BL01B1 at the SPring-8 with a Si(111) double crystal monochromator using synchrotron radiation from the 8GeV storage ring [4]. The XAFS spectra were measured in the fluorescence-detection mode.…”

Determination of Chemical Form of Antimony in Contaminated Soil around a Smelter Using X-ray Absorption Fine Structure

“…16 The main optics were the standard SPring-8 bending magnet system, which contains two mirrors and a fixed-exit double crystal monochromator. Higher harmonics were reduced by reflection on the two mirrors.…”

Phase separation driven by mobile cations in(Na1−xKx)0.35CoAbe1, Kim2, Matsuda3 et al. 2009Phys. Rev. BSelf Cite3020View full textAdd to dashboardCite

“…The measurements were carried out at 300 K at a broad energy-band beamline BL01B1. 27 XANES near the Co and Fe K edge were recorded by a Lytle detector in a fluorescent yield mode with a Si͑111͒ double-crystal monochromator. We adopted a quick-scan method, which enables us to obtain each spectrum in 5 min.…”