BL23SU OUTLINE
問い合わせ番号
INS-0000000364
ABSTRACT
BL23SU is a soft X-ray undulator beamline of Japan Atomic Energy Agency (JAEA). It is used for research areas such as fundamental heavy-element research and environment and energy materials. The experimental stations are located at the experimental hall and the RI building.
AREA OF RESEARCH
- Surface chemistry with supersonic molecular beam
- Photoelectron spectroscopy
- Magnetic circular dichroism
- Scanning transmission X-ray microscopy
KEYWORDS
- Scientific field
Surface chemistry, Chemical reaction dynamics, Real-time in-situ photoemission spectroscopy (Station 1)
Photoelectron spectroscopy, Strongly-correlated electron system, Actinide compounds (Station 2)
MCD, XAS, Strongly correlated electron system, Magnetic property (Station 3)
Scanning Transmission X-ray Microscopy, Microprobe analysis of Actinides (Station 4)
SOURCE AND OPTICS
- Light source
Twin helical undulators (THU), which produce circularly-polarized soft X-ray synchrotron radiation, were used as a light source. Polarization of light can be switched with the repetition frequency of 10 Hz by the kicker magnet.
- Schematic view of beamline and monochromator system
The main optics is a varied - line - spacing plane grating type (VLSPG) monochromator. This consists of an entrance slit, spherical mirrors, varied-line-spacing plane gratings, an exit slit, a post-focusing mirror, and refocusing toroidal mirrors. The soft X-rays are guided over 120 m from the undulator, crossing the two areas (experimental hall and RI hall).
| Undulator period | 75.2 mm |
| Number of periods | 17 |
- X-rays at sample
Energy Range 0.4 ~ 1.8 keV Energy resolution E/ΔE > 10000 Photon flux 1012 ph/s/0.01%b.w. at 700 eV Beam size < 200 µm in diameter
Fig. 1 Schematic view of BL23SU and the monochromator system
| Optics : Distance from the source |
Optical element | Function |
| 40 m | Cylindrical mirror (Mv) | Vertical focusing at the entrance slit |
| 42.5 m | Cylindrical mirror (Mh) | Deflection and horizontal focusing |
| 50 m | Entrance slit (S1) | |
| 60.1 m | Spherical mirror (M1, M2) | |
| 61.91 m | Constant deviation monochromator with varied-space plane gratings (VLSPG) | Monochromatizarion |
| 71.91 m | Exit slit (S2) | |
| 73.91 m | Cylindrical mirror (M3) | Post focus |
| 114 m | Troidal mirror (M4) | Refocus |
EXPERIMENTAL STATIONS
- Surface chemistry experimental station
- Photoelectron spectroscopy station
- MCD station
- Scanning transmission X-ray microscopy station
PUBLICATION SEARCH
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CONTACT INFORMATION
Please note that each e-mail address is followed by "@spring8.or.jp."
Shin-ichi FUJIMORI
Japan Atomic Energy Agency, Sector of Nuclear Science Research, Materials Sciences Research Center
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)791-58-0820
Fax : +81-(0)-791-58-2620
e-mail : fujimori
Website
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