Construction of focusing soft x-ray beamline BL1A at the UVSOR

Hiraya, Atsunari; Horigome, Toshio; Okada, Norio; Mizutani, Nobuo; Sakai, Kusuo; Matsudo, O.; Hasumoto, Masami; Fukui, Kiichi; Watanabe, Makoto

doi:10.1063/1.1143096

Cited by 29 publications

(12 citation statements)

References 2 publications

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“…Nb and Mo L 3 -edge XANES data were recorded at the BL-1A station on the soft X-ray beamline at UVSOR (Institute for Molecular Science, Okazaki, Japan). Spectra of their powder samples were recorded in a total electron yield mode at room temperature, using an InSb(111) double crystal monochromator.…”

Section: Methodsmentioning

confidence: 99%

“…The correlation between the d orbital splitting and pre-edge peak area of the K-or L 1 -edge XANES spectra appears to provide structural information about unknown group V, VI, and VII metal sites. 17 on the soft X-ray beamline at UVSOR (Institute for Molecular Science, Okazaki, Japan). Spectra of their powder samples were recorded in a total electron yield mode at room temperature, using an InSb(111) double crystal monochromator.…”

Section: Introductionmentioning

confidence: 99%

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Structural Analysis of Group V, VI, and VII Metal Compounds by XAFS

et al. 2011

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The characteristics of K-, L1-, and L3-edges of XANES (X-ray Absorption Near Edge Structure) spectra of group V, VI, and VII compounds, which have different coordination number, number of d electrons, and the coordination sphere symmetry, have been classified. Two p → d transitions were observed in the second derivative plots of the L3-edge XANES spectra for the group V, VI, and VII compounds. These two transitions can be assigned to split d orbitals. The splitting and area of the two white lines depends on the symmetry of coordination sphere because the splitting corresponds to the crystal field splitting of d orbitals. The splitting of d orbitals is correlated with the pre-edge peak area of K or L1-edge XANES spectra, which are attributed to the dipole forbidden s → d transition and occur from the mixing of p and d orbitals. This correlation is supported by DFT calculations of several groups of V, VI, and VII structural models (being four-, five-, and six-coordinated, respectively). Clarifying the correlation between the splitting of the white line and structure of group V, VI, and VII metal compounds is important for providing structural information about unknown group V, VI, and VII metal sites.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural Analysis of Group V, VI, and VII Metal Compounds by XAFS

et al. 2011

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“…A mechanical cam, on which the second crystal travels, provides a vertical offset of 3.0 cm. Optical alignment of the two crystals is carried out with UVSOR 0.8-4.0 2.0 mm Â 1.0 mm 3 Â 10 8 to 4 Â 10 9 6.7 Â 10 À4 Hiraya et al (1992), Shigemasa (2010) BL7A}UVSOR 0.9-5.0 N/A 3 Â 10 6 to 2 Â 10 10 5.3 Â 10 À4 Murata et al (1992), Kamada et al (1996) motorized manipulators adjusting pitch angles of both crystals and roll angle of the second crystal. Energy resolution of the monochromatic X-ray beam is partly controlled by an entrance slit in the DCM, which is normally opened at 0.77 mm, corresponding to the angular beam divergence of 82 mrad in the vertical direction.…”

Section: Beamlinementioning

confidence: 99%

SUT-NANOTEC-SLRI beamline for X-ray absorption spectroscopy

et al. 2017

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The SUT-NANOTEC-SLRI beamline was constructed in 2012 as the flagship of the SUT-NANOTEC-SLRI Joint Research Facility for Synchrotron Utilization, co-established by Suranaree University of Technology (SUT), National Nanotechnology Center (NANOTEC) and Synchrotron Light Research Institute (SLRI). It is an intermediate-energy X-ray absorption spectroscopy (XAS) beamline at SLRI. The beamline delivers an unfocused monochromatic X-ray beam of tunable photon energy (1.25-10 keV). The maximum normal incident beam size is 13 mm (width) × 1 mm (height) with a photon flux of 3 × 10 to 2 × 10 photons s (100 mA) varying across photon energies. Details of the beamline and XAS instrumentation are described. To demonstrate the beamline performance, K-edge XANES spectra of MgO, AlO, S, FeS, FeSO, Cu, CuO and CuO, and EXAFS spectra of Cu and CuO are presented.

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“…In the present work, we have introduced the KTP (Crystal Laser Co., France) crystal at the soft X-ray double crystal beamline BL1A of the UVSOR facility (Hiraya et al, 1992) and examined its performance and applicability to the EXAFS measurement for the Al and Mg K-edges. Our storage ring is being operated at a rather low energy (750MeV), and the BL1A utilizes radiation from a bending magnet, whose critical energy is 424 eV.…”

Section: Introductionmentioning

confidence: 99%

Mg and Al K-edge XAFS measurements with a KTP crystal monochromator

Takata¹,

Shigemasa²,

Kosugi³

2001

J Synchrotron Radiat

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There has been a strong demand for monochromator crystals with a large lattice spacing in order to measure EXAFS spectra at the Mg and Al K-edges. We have introduced a pair of KTP crystal at BL1A of the UVSOR facility and examined its performance in the energy range between 1200 and 2000eV. This crystal monochromator can supply stable photon beams enough to measure the EXAFS spectra for the Mg and Al K-edges. Advantages of the KTP crystal are discussed in comparison with a YB66 crystal monochromator.

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Construction of focusing soft x-ray beamline BL1A at the UVSOR

Cited by 29 publications

References 2 publications

Structural Analysis of Group V, VI, and VII Metal Compounds by XAFS

Structural Analysis of Group V, VI, and VII Metal Compounds by XAFS

SUT-NANOTEC-SLRI beamline for X-ray absorption spectroscopy

Mg and Al K-edge XAFS measurements with a KTP crystal monochromator

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