BL08W OUTLINE
Inquiry number
INS-0000000347
ABSTRACT
BL08W is the only wiggler beamline and the highest X-ray energy beamline in SPring-8.
This beamline is designed for Compton scattering spectroscopy with linearly or elliptically polarized X-rays in the energy ranges of 100 ~ 300 keV. The spectroscopy will be widely applied to the studies of Fermiology and magnetism of materials.
The beamline serves two experimental stations. Station A is designed for magnetic Compton scattering experiments using elliptically polarized X-rays. A superconducting magnet with a maximum field of 3 T and a minimum polarity-switching time of 5 seconds and a 10-segmented Ge solid-state detector are installed. Station B is designed for high momentum-resolution experiments of 0.14 atomic units using 100 ∼ 120 keV X-rays, which makes it possible to measure Compton profiles of virtually all materials. A Cauchois-type X-ray spectrometer is installed, which consists of a Cauchois-type crystal analyzer and a position sensitive detector (PSD).
The beamline is also available for the studies of high energy Bragg scatterings, high-energy X-ray fluorescence analysis, and nuclear excitations.
AREA OF RESEARCH
- Magnetic Compton scattering
- High-resolution Compton scattering
- High-energy Bragg scattering
- High-energy fluorescent X-ray analysis
KEYWORDS
- Scientific field
Fermiology, Magnetism, Electron momentum density, Elemental analysis - Equipment
Superconducting magnet, Cryocooler, Magnetic Compton spectrometer, Cauchois-type X-ray spectrometer, Multi-elements Ge solid-state detector, X-ray image intensifier camera
SOURCE AND OPTICS
An elliptical multipole wiggler installed on BL08W delivers us linearly or elliptically polarized X-rays. The X-rays emitted from the wiggler are focused and monochromatized by an asymmetric Johann type monochromator (Si 400 / Si 620 / Si 771) or a doubly bent monochromator (Si 400). The parameters on the sample are as follows.
- Schematic View of Beamline
- X-rays at Sample
- Station-A
| Energy range | 110 - 170 / 170 - 270 / 270 - 300 keV |
| Energy resolution | ΔE/E ~ 2 × 10-3 |
| Photon flux | 5 × 109 ph/s at 300 keV |
| Beam size | 3 mm (H) × 1 mm (W) |
| Energy range | 100 - 120 keV |
| Energy resolution | ΔE/E < 1 × 10-3 |
| Photon flux | 1 × 1013 ph/s at 100 keV |
| Beam size | 1 mm (H) × 2 mm (W) |
EXPERIMENTAL STATIONS
- Magnetic Compton scattering spectrometer
- High resolution Compton scattering spectrometer
- High energy X-ray fluorescent spectrometer
PUBLICATION SEARCH
* Sorry, Some parts of results are displayed using Japanese characters.
CONTACT INFORMATION
Please note that each e-mail address is followed by "@SPring-8.or.jp."
Masayoshi ITOU
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone: +81-(0)791-58-0803 (ex.3908)
Fax: +81-(0)791-58-0830
e-mail: mito
Yoshiharu SAKURAI
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone: +81-(0)791-58-0803 (ex.3803)
Fax: +81-(0)791-58-0830
e-mail: sakurai