Dongguan, November 12 (Xu Qingqing, Li Jianping, Zhu Jiahao) The high-energy direct geometric inelastic neutron scattering time-of-flight spectrometer (hereinafter referred to as the “Zhongda spectrometer”) jointly built by Sun Yat-sen University and the Spallation Neutron Source Science Center was officially unveiled at the China Spallation Neutron Source in Dongguan on the 12th, and is expected to be officially put into use next year.
On November 12, the high-energy direct geometric inelastic neutron scattering time-of-flight spectrometer of Sun Yat-sen University was unveiled. Courtesy of Sun Yat-sen University
According to reports, neutron scattering spectrometer is a measuring instrument that can deeply study the internal structure and motion of materials. Bombarding a sample with a specific velocity of neutrons can reflect its properties on the basis of understanding the microstructure and associated strength of the material, thereby helping the study of lattice vibration, magnetic excitation and crystal field excitation of matter, and providing strong support for physics, chemistry, materials, mechanics and interdisciplinary research.
Professor Wang Meng, Director of the Center for Neutron Science and Technology of the School of Physics of Sun Yat-sen University, introduced that the CUHK spectrometer is the first inelastic neutron scattering time-of-flight spectrometer in China, with a design incident energy range of 10-1500 meV, and its main performance indicators have reached the international advanced level. After the CUHK spectrometer is officially put into use, the team can use the neutron spectrometer to observe the magnetic excitation spectrum of nickel oxides, obtain magnetic and spin dynamics data, and help the mechanism of high-temperature superconductivity.
High-energy direct geometric inelastic neutron scattering time-of-flight spectrometer. Courtesy of Sun Yat-sen University
Gao Song, academician of the Chinese Academy of Sciences and president of Sun Yat-sen University, said at the unveiling ceremony: “Since 2017, Sun Yat-sen University and the Institute of High Energy Physics of the Chinese Academy of Sciences have actively promoted cooperation in the construction of high-energy inelastic neutron scattering spectrometer, and signed a cooperation construction agreement in 2019 to start the construction of the spectrometer. In the past four years, the spectrometer construction team of the Spallation Neutron Source Science Center and the School of Physics of the university have successfully measured the phonon spectrum of vanadium in June this year, marking the successful construction of China’s first high-energy inelastic neutron scattering spectrometer. ”
It is reported that in 2021 and 2022, a total of 15 special doctoral students were approved for the spectrometer spectrometer, which is set up for the discipline development of spectrometer, and adopts a dual tutor system, which is jointly guided by professors from the School of Physics of Sun Yat-sen University and the supervisor of Spallation Neutron Source. CUHK spectrometer will provide a platform for cultivating young talents in the field of neutron spectroscopy research. (ENDS)
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