Sci-Tech

The micro world "super camera" developed by our country has been delivered for use

2025-11-18   

On November 16th, China's first high-energy direct geometry inelastic neutron scattering time-of-flight spectrometer (hereinafter referred to as the "high-energy inelastic spectrometer") was accepted and delivered for use at the Chinese Spallation Neutron Source. As an important platform for studying material dynamics properties, high-energy non elastic spectrometers will provide experimental conditions for physics, chemistry, materials, mechanics, and interdisciplinary research. If conventional scientific instruments are compared to the human eye, then a high-energy non ballistic spectrometer is a "super camera" with superpowers. It not only has the ability to see the static structure of matter clearly, but also has the ability to detect the dynamic processes of atoms and molecules inside matter on a picosecond (trillionth of a second) time scale, recording every moment of how atoms and molecules vibrate, rotate, and transfer energy. The uniqueness of this spectrometer lies in its ability to directly detect microscopic movements inside matter by utilizing the uncharged and strong penetrating properties of neutrons. When neutrons undergo inelastic collisions with atomic nuclei in matter, they change their velocity and direction. Through these changes, scientists can deduce the dynamic information inside matter. The high-energy non elastic spectrometer fills the gap in inelastic neutron scattering above 100 millielectronvolts in China. It can obtain both spatial distribution information of scattered neutrons and energy changes of scattered neutrons, and can measure the dynamic behavior of material microstructures in momentum and energy space; Meanwhile, by utilizing the Fermi chopper and bandwidth chopper working together, fast switching between multi wavelength mode and single wavelength mode can be achieved. In addition, benefiting from the large detector area, the spectrometer is equipped with a white light Laue camera working mode, which helps to quickly detect information such as the structure and magnetic structure of single crystal materials. It will provide key microstructural dynamics information for cutting-edge basic research on high-temperature superconducting physics mechanisms, quantum magnetic action mechanisms, thermoelectric material transport properties, ion diffusion mechanisms in batteries, and biomaterial activity. (New Society)

Edit:Momo Responsible editor:Chen zhaozhao

Source:Science and Technology Daily

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