2026-03-11 量子科学技術研究開発機構,東北大学
図1：超高エネルギー分解能と高空間分解能を両立する「2D-RIXS顕微鏡」の概念図。
＜関連情報＞
- https://www.qst.go.jp/site/press/20260311.html
- https://journals.iucr.org/s/issues/2026/03/00/ok5153/index.html
2D-RIXS: 高エネルギー・高空間分解能の共鳴非弾性X線散乱顕微鏡
D-RIXS: resonant inelastic X-ray scattering microscopy with high energy and spatial resolutions
Kohei Yamamoto,Hakuto Suzuki and Jun Miyawaki
Journal of Synchrotron Radiation Published:11 March 2026
DOI:https://doi.org/10.1107/S1600577526000573
A two-dimensional resonant inelastic X-ray scattering (2D-RIXS) microscopy system has been developed at beamline BL02U of NanoTerasu. The instrument combines a Wolter type-I mirror for spatial imaging with a varied-line-spacing grating spectrometer, simultaneously achieving micrometre-scale spatial resolution and ultrahigh energy resolution in the soft X-ray regime. Test chart measurements confirm a vertical spatial resolution of 1.0 µm near the field-of-view center, and the horizontal resolution determined by the incident beam footprint is 0.8 µm. RIXS imaging capabilities have been demonstrated by the measurements of a patterned NanoTerasu logo and exfoliated NiPS3 nanoflakes, highlighting its efficiency in locating specific microscale regions within inhomogeneous samples. These results establish 2D-RIXS microscopy as a position-sensitive probe of elementary excitations in quantum materials and functional devices.
