Research Group:
Research group on Compton scattering
Contact:
| Koizumi Akihisa |
| University of Hyogo, 3-2-1 Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297,Japann |
| Telephone: +81-791-58-0529 |
| akihisaiatjsci.u-hyougo.ac.jp |
Research Area:
Fundamental Characterization, Applied Materials, Measurements
Beamline:
BL08W,@BL05XU
Overview of Research Group, Goals and Purposes:
Compton scattering experiments measure spin specific electron momentum distribution, which have unique features with compared to other experiments.
- Quantum states in ground-state can be measured in a wide momentum space, providing information about bulk electronic structure that can be directly compared to theoretical calculations, such as band calculations.
- Spin specific quantum states can be measured by using circularly polarized X-rays. Therefore, majority and minority spin states can be obtained separately.
- The high penetration property of high-energy X-rays enables measurement under extreme and combined conditions, including high (low) temperature, high pressure, and magnetic fields.
- Measurements of quantum states with high transmittance of high energy X-ray can be a new non-destructive testing (such as operando reaction distribution measurement of Li ion secondary battery)
Compton scattering experiments with monochromatic, high energy, high flux and circularly polarized X-rays, which are strongness of SPring-8 in the world, are very unique activity in the world. Therefore we carry out the following activity for the next plan of the SPring-8.
- We carry out basic research of quantum states in momentum space, which cause the function of materials, and collaborate with theory group.
- Imaging of quantum states: Visualization of Fermi surface, spin/orbital states of strongly corelated materials, high Tc materials, electrochemical reaction and so on.
- Extreme condition: Supercritical states, high energy density material, non-equilibrium materials.
- We develop new measurement technique by using Compton scattering and high transmittance of high energy X-rays
- We develop new non-destructive testing by using Compton scattering and high transmittance of high energy X-rays.(Ex. Operando measurements of electrochemical reaction distribution in a Li ion battery)
- We develope new new measurement technique such as magnetic imaging using Magnetic Compton scattering.
- New measurement technique for the next SPring-8 plan
- Data analysis using informatics
- 2D detector with energy discrimination for imaging
- High momentum resolution measurement
- Devices for circularly polarized X-rays
The renewal of experimental instruments will be considered because the present instruments are deteriorating.
@We promote the progress of science and social challenges with collaborating with researchers. Furthermore we suggest the next plan for SPring-8II.