BL27SU OUTLINE
Inquiry number
INS-0000000287
ABSTRACT
BL27SU is a soft X-ray undulator beamline that is dedicated to soft X-ray spectroscopy and microscopy under normal ambient pressure (helium) or high-vacuum condition. The beamline consists of two branches. The B-branch provides higher energy soft X-ray (2.1-3.3keV) by use of a Si(111) double crystal monochromator. On the other hand, equipped with a varied-line-spacing plane grating monochromator, the C-branch provides lower soft X-ray radiation in the range from 0.17 to 2.2 keV. The major applications of the beamline are soft X-ray photoabsorption spectroscopy, soft X-ray fluorescence spectroscopy and scanning X-ray microscopy using soft X-ray micro beam. The experimental stations are connected to the beamline through the differential pumping apparatus or Si3N4 vacuum window. This setting makes us possible to control sample environments from 1 atom (helium) to 10-6 Pa.
AREA OF RESEARCH
- Soft X-ray photoabsorption spectroscopy (XAS)
Silicon drift detector for fluorescence XAS
Chemical state analysis of light elements in dilute samples
Simultaneous detection of fluorescence and electron yield for depth selective XAS analysis - Soft X-ray photoabsorption spectroscopy under the normal ambient atmospheric pressure condition
in-situ and operando analysis
XAS analysis of liquid sample using flow-type liquid cell - Soft X-ray fluorescence analysis (XRF) and soft x-ray emission spectroscopy (XES)
Trace element analysis (XRF)
Electronic structure analysis (XES) - Scanning soft X-ray microscopy
Mapping analysis of light elements using Silicon drift detector
Chemical mapping of sulfur and phosphorus by combination analysis of XAS and XRF
KEYWORDS
- Scientific field
Geochemistry, Environmental science, Electrochemistry, Organic chemistry, catalytic chemistry,
Polymer chemistry, Materials science - Equipment
High-resolution soft X-ray monochromator, Micro-focus optics,
soft-x-ray emission spectrometer, Silicon-drift-detector, differential pumping system
Light source
Light source is a Figure-8 undulator, which can produce linearly polarized radiation with low on-axis heat load. Figure-8 undulator provides both horizontally and vertically polarized soft X-ray beams by choice of an appropriate undulator gap, the linear electric vector lying horizontally (0°) from the integer-order-harmonic light and that vertically (90°) from the half-integer-order light.
Pre-mirrors
The pre-mirrors that installed in an optics hutch deflect the photon beam to one of two branches. M0' at 2.2°diverts the photon beam into B-branch. M0 and M1 deflect and focus the photon beam to the C-branch.
| Branch | B | C | |
| Mirror | M0' | M0 | M1 |
| Incident angle | 88.9° | 89.4° | 89.4° |
| Mirror Shape | Plane | Cylinder | Bent cylinder |
| Focusing | --- | Sagittal (vertical focus) |
Tangential (horizontal focus) |
| Material | Nt/Si | Au/Si | Au/Si |
Schematic view of BL27SU
Photon flux curve of BL27SU
Experimental stations
- B-branch
- C-branch
Soft X-ray photoabsorption spectroscopy
Normal ambient pressure soft X-ray photoabsorption spectroscopy
Soft-x-ray emission spectroscopy
PUBLICATION SEARCH
* Sorry, Some parts of results are displayed using Japanese characters.
CONTACT INFORMATION
Please note that each e-mail address is followed by "@spring8.or.jp."
Kiyofumi NITTA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : nittak
Oki SEKIZAWA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : sekizawa
Hiroki SUGA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : hiroki-suga