Quick-scanning x-ray absorption spectroscopy system with a servo-motor-driven channel-cut monochromator with a temporal resolution of 10 ms

Journal Article · Wed Aug 15 04:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4746770· OSTI ID:22093697

Nonaka, T.; Dohmae, K.; Araki, T.; Hayashi, Y.; Hirose, Y. ^[1]; Uruga, T.; Yamazaki, H.; Tanida, H.; Goto, S. ^[2]; Mochizuki, T. ^[2]

---

1. Toyota Central R and D Labs., Inc., Nagakute, Aichi 480-1192 (Japan)
2. JASRI/Spring-8, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)

We have developed a quick-scanning x-ray absorption fine structure (QXAFS) system and installed it at the recently constructed synchrotron radiation beamline BL33XU at the SPring-8. Rapid acquisition of high-quality QXAFS data was realized by combining a servo-motor-driven Si channel-cut monochromator with a tapered undulator. Two tandemly aligned monochromators with channel-cut Si(111) and Si(220) crystals covered energy ranges of 4.0-28.2 keV and 6.6-46.0 keV, respectively. The system allows the users to adjust instantly the energy ranges of scans, the starting angles of oscillations, and the frequencies. The channel-cut crystals are cooled with liquid nitrogen to enable them to withstand the high heat load from the undulator radiation. Deformation of the reflecting planes is reduced by clamping each crystal with two cooling blocks. Performance tests at the Cu K-edge demonstrated sufficiently high data quality for x-ray absorption near-edge structure and extended x-ray absorption fine-structure analyses with temporal resolutions of up to 10 and 25 ms, respectively.

• OSTI ID: 22093697
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
ABSORPTION SPECTROSCOPY
DEFORMATION
FINE STRUCTURE
HEATING LOAD
KEV RANGE
MONOCHROMATORS
PERFORMANCE
RESOLUTION
SPRING-8 STORAGE RING
SYNCHROTRON RADIATION
WIGGLER MAGNETS
X RADIATION
X-RAY SPECTROSCOPY