SR Imaging Instrumentation Unit
Unit Leader
Yoshiki KOHMURA
Various innovative x-ray imaging techniques are emerging using the interference of x-rays available at the 3rd generation synchrotron radiation facilities. SR Imaging Instrumentation Unit implements the common equipments for the users of undulator beamline BL29XUL at SPring8, developing the cutting edge of x-ray imaging techniques, such as coherent diffraction microscopy and nano-focusing, as well as the hard x-ray photo-electron spectroscopy, so that outstanding science is achieved in the medical, biological and material fields. This Unit plans to develop original x-ray imaging techniqures and optical elements, for the purpose of the utilization research at SPring-8 and at the 4th generation synchrotron radiation light source, the x-ray free electron laser SACLA.
- R&D of common equipments for the users of x-ray imaging and hard x-ray photo-electron spectroscopy
- R&D of original x-ray imaging techniqures
- R&D of optical elements for the utilization research at x-ray free electron laser
- June 10,2010
- X-ray beam diffracted by deformed crystal triggers large horizontal translation
- Kohmura, Y., Sawada, K., Ishikawa, T.:
"Berry-Phase Translation of X Rays by a Deformed Crystal"
Phys. Rev. Lett. 104, 244801-1-244801-4 (2010). - Kohmura, Y., Sawada, K., Taguchi, M., Ishikawa, T., Ohigashi, T., Suzuki, Y.:
"Formation of x-ray vortex dipoles using a single diffraction pattern and direct phase measurement using interferometry"
Applied Physics Letters 94, 101112-1-101112-3 (2009). - Jiang, H., Ramunno-Johnson, D., Song, C., Amirbekian, B., Kohmura, Y., Nishino, Y., Takahashi, Y., Ishikawa, T., Miao, J.:
"Nanoscale Imaging of Mineral Crystals inside Biological Composite Materials using X-ray Diffraction Microscopy"
Phys. Rev. Lett. 100, 038103-1-038103-4 (2008). - Kohmura, Y., Sakurai, T., Ishikawa, T., Takeuchi, A., Suzuki, Y., Goto, S.:
"Determination of complex transmissivity using x-ray in-line holography and two-beam interferometry"
Journal of Applied Physics 102, 023101-1-023101-5 (2007). - Song, C., Ramunno-Johnson, D., Nishino, Y., Kohmura, Y., Ishikawa, T., Chen, C.C., Lee, T.K., Miao, J.:
"Phase Retrieval from Exactly Oversampled Diffraction Intensity Through Deconvolution"
Phys. Rev. B. 75, 012102-1-012102-4 (2007). - Miao, J., Chen, C.C., Song, C., Nishino, Y., Kohmura, Y., Ishikawa, T., Ramunno-Johnson, D., Lee, T.K., Risbud, S.H.:
"Three-Dimensional GaN-Ga2O3 Core Shell Structure Revealed by X-ray Diffraction Microscopy"
Phys. Rev. Lett. 97, 215503-1-215503-4 (2006). - Kohmura, Y., Nishino, Y., Ishikawa, T., Miao, J.:
"Effect of Distorted Illumination Waves on Coherent Diffraction Microscopy"
Journal of Applied Physics 98,123105-1-123105-6 (2005). - Miao, J., Nishino, Y., Kohmura, Y., Johnson, B., Risbud, S.H., Ishikawa, T.:
"Quantitative Image Reconstruction of GaN Quantum Dots from Oversampled Diffraction Intensities Alone.:"
Phys. Rev. Lett. 95, 085503-1-085503-4 (2005). - Kohmura, Y., Saurai, T., Ishikawa, T., Suzuki, Y.:
"Phase retrieval with two-beam off-axis x-ray holography"
Journal of Applied Physics 96,4, 1781-1784 (2004). - Sakurai, D., Goda, M., Kohmura, Y., Horie, T., Iwamoto, H., Ohtsuki, H., Tsuda, M.:
"The role of pigment cells in the brain of ascidian larva"
Journal of comparative neurology 475, 70-82 (2004).
Principal Investigator
- Yoshiki KOHMURA
- Unit Leader