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Energy and AI 2023年第4期14卷 612-619页

作者： M.Kodama A.Takeuchi M.Uesugi S.Hirai Tokyo Institute of Technology 2-12-1 OokayamaMeguro-kuTokyo 152-8550Japan Japan synchrotron radiation Research Institute(JASRI/SPring-8) 1-1-1 KoutoSayoHyogo 679-5198Japan

High-performance all-solid-state lithium-ion batteries require observation,control,and optimization of the electrode structure.X-ray computational tomography(CT)is an effective nondestructive method for observing the electrode structure in three ***,the limited availability of synchrotron radiation CT,which offers high-resolution imaging with a high signal-to-noise ratio,makes it difficult to conduct experiments and restricts the use of X-ray CT in battery ***,laboratory CT systems are widely available,but they use X-rays emitted from a metal target,resulting in lower image quality and resolution compared with synchrotron radiation *** study explores a method for achieving comparable resolution in laboratory CT images of all-solid-state batteries to that of synchrotron radiation *** method involves using the synchrotron radiation CT images as training data for machine learning *** results demonstrate that,by employing an appropriate machine learning algorithm and activation function,along with a sufficiently deep network,the image quality of laboratory CT becomes equivalent to that of synchrotron radiation CT.

关键词： All-solid-state lithium-ion battery X-ray CT laboratory CT synchrotron radiation CT Super-resolution Machine learning

Transverse beam size measurement system using visible synchrotron radiation at HLS II

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Chinese Physics C 2016年第9期40卷 144-150页

作者：唐凯孙葆根杨永良卢平唐雷雷吴芳芳程超才郑佳俊李浩 National synchrotron radiation laboratory University of Science and Technology of China

An interferometer system and an imaging system using visible synchrotron radiation（SR） have been installed in the Hefei Light Source（HLS） II storage ring. Simulations of these two systems are given using synchrotron radiation Workshop（SRW） code. With these two systems, the beam energy spread and the beam emittance can be measured. A detailed description of these two systems and the measurement method is given in this paper. The measurement results of beam size, emittance and energy spread are given at the end.

关键词： HLS II interferometer beam profile beam energy spread beam emittance

Producing terahertz coherent synchrotron radiation at the Hefei Light Source

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Chinese Physics C 2015年第7期39卷 82-87页

作者：许德荣徐宏亮邵琰 National synchrotron radiation laboratory University of Science and Technology of China

This paper theoretically proves that an electron storage ring can generate coherent radiation in the THz region using a quick kicker magnet and an AC sextupole magnet. When the vertical chromaticity is modulated by the AC sextupole magnet, the vertical beam collective motion excited by the kicker produces a wavy spatial structure after a number of longitudinal oscillation periods. The radiation spectral distribution was calculated from the wavy bunch parameters at the Hefei Light Source（HLS）. When the electron energy is reduced to 400 Me V, extremely strong coherent synchrotron radiation（CSR） at 0.115 THz should be produced.

关键词： CSR THz storage ring

Studies of the Gd Overlayer on Cr by synchrotron radiation Photoemission

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Chinese Physics Letters 1997年第7期14卷 553-556页

作者： ZHANG Fa-pei XU Peng-shou XU Shi-hong LU Er-dong YU Xiao-jiang ZHANG Xin-yi National synchrotron radiation laboratory University of Science and Techology of ChinaHefei 230029

The formation of Gd/Cr interface,the growth mechanism and electronic structure of Gd over-layers were investigated by synchrotron radiation *** is shown that Gd adatoms interact with the Cr substrate weakly.A lower deposition rate of the Gd overlayer(l.0Å/min)favors the smooth growth of Gd/Cr ***,higher deposition rate(6.0Å/min)leads to the cluster growth of the Gd overlayer and the presence of a“two-peak”feature of Gd 4f *** correlate this feature with the different coordination number of surface atoms derived from cluster-induced surface roughness.

关键词： cluster roughness surface

In-Situ synchrotron radiation Infrared Spectroscopic Identification of Reactive Intermediates over Multiphase Electrocatalytic Interfaces

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Chinese Journal of Structural Chemistry 2022年第10期41卷 4-15页

作者： Wanlin Zhou Jingjing Jiang Weiren Cheng Hui Su Qinghua Liu National synchrotron radiation laboratory University of Science and Technology of ChinaHefei 230029China

A comprehensive understanding of the microscopic reaction mechanisms at the gas-solid-liquid electrochemical interfaces is urgently required for the development of advanced electrocatalysts applied in burgeoning sustainable energy conversion systems. In-situ synchrotron radiation Fourier transform infrared(SR-FTIR) spectroscopy is one of the most powerful techniques for investigating the evolving dynamics of reactive intermediates during electrocatalytic reactions. In this review, we methodically summarize the recent progress in the research of dynamic mechanisms for valuable electrocatalytic reactions based on in-situ SR-FTIR methodology. Moreover, the merits and drawbacks of SRFTIR spectroscopy, the design principles of infrared beam setups and in-situ cells, as well as the in-situ measurement criteria are also discussed in detail. Lastly, the potential challenges and opportunities in this field are prudently stated. This review is expected to stimulate a broad interest in the material science and electrochemistry communities for exploring the dynamic mechanisms of prominent catalysis at the atomic/molecular level by using SR-based spectroscopy.

关键词： synchrotron radiation infrared spectroscopy in-situ reaction dynamics

Threshold photoelectron-photoion coincidence and its applica-tion to photoionization of molecules using synchrotron radiation

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Chinese Science Bulletin 1997年第10期42卷 809-814页

作者： Gao, H Zhang, YW Sheng, LS Qi, F Liu, YM National synchrotron radiation laboratory University of Science and Technology of China Hefei China

PHOTOIONIZATION method is one of the powerful tools for the investigation of the molecular en-ergetic,structure and dynamic *** process of photoionization of a given systeminvolves at least three particles:the absorbe... 详细信息

关键词： threshold photoelectron threshold photoelectron-photoion coincidence synchrotron radiation.

Study on oxidation of Gd film grown on Ni(110) surface by synchrotron radiation photoemission

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Progress in Natural Science:Materials International 1999年第10期9卷 34-40页

作者：徐法强朱俊发孙玉明王险峰陆尔东徐彭寿张新夷庄叔贤 China Department of Chemical Physics Hefei 230029 National synchrotron radiation laboratory University of Science and Technology of China

Soft X-ray synchrotron radiation photoemission and X-ray photoelectron spectroscopy ( XPS) were used to study the interaction of oxygen with Gd overlayers grown in situ on Ni(110) surface and with the Gd-Ni composite film. Oxygen showed a large primary sticking coefficient on a 3.7 nm-thick Gd film. The high binding energy(BE) peak in the double-peak ot Gd 4f emission attenuated with the increase of oxygen exposure and almost disappeared when the specimen was annealed at 800 K after a 50 L coverage. The O 1s XPS spectra exhibited only one peak attributed to lattice oxygen at 529.6 eV in the range of 0-50 L exposure. Over the surface of composite film prepared by slight oxidation and high temperature (1000 K) annealing treatment of 0.63 nm Gd film, the adsorption of oxygen resulted in the surface segregation and oxidation of Gd component. Two kinds of oxygen species, the chemisorbed 0 ion and lattice oxygen, were detected. The oxidation mechanism of Gd film as well as the nature and evolution of the surf

关键词： Gd film synchrotron radiation photoemission Ni(110) surface oxygen adsorption oxygen species

Combustion study with synchrotron radiation single- photon ionization technique

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Science Bulletin 2005年第11期50卷 1082-1086页

作者： YANG Rui, WANG Jing, HUANG Chaoqun, YANG Bin, WEI Lixia, SHAN Xiaobin, SHENG Liusi, ZHANG Yunwu & QI Fei National synchrotron radiation laboratory, University of Science and Technology of China, Hefei 230029,China Correspondence should be addressed to Qi Fei (email:fqi@***) National synchrotron radiation laboratory University of Science and Technology of China Hefei 230029 China

Here we report a combustion endstation at National synchrotron radiation laboratory (NSRL) and some primary experimental results. synchrotron radiation can provide the tunable vacuum ultraviolet (VUV) photon with the high intensity and the good collimation. VUV photoioni-zation is a single-photon ionization process. Combined with molecular-beam mass spectrometry (MBMS), the VUV single-photon ionization can be applied to detect the combustion products, especially the intermediates and free radicals produced from combustion process. This method is proved to be a powerful tool for combustion study, which could be helpful for developing combustion kinetic models and understanding the mechanism of combustion reactions.

关键词： synchrotron radiation VUV single-photon ionization molecular-beam mass spectrometry combustion diagnosis combustion intermediates.

Study on Atomic Fluorescence Spectrometry Excited by synchrotron radiation

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Chinese Journal of Chemical Physics 2008年第5期21卷 427-432页

作者： Jia-jia Guo Wu-er Gana Guo-bin Zhang Qing-de Sua Department of Chemistry University of Science and Technology of China Hefei 230026 China National synchrotron radiation laboratory University of Science and Technology of China Hefei 230027 China

A novel analysis approach using atomic fluorescence excited by synchrotron radiation is presented. A system for synchrotron radiation-atomic fluorescence spectrometry is developed, and experimental conditions such as flow rate, analyte acidity, concentration of pre-reducing and hydrogenation system are optimized. The proposed method is successfully applied to get an excitation spectrum of arsenic. Seven of ten primary spectral lines, four of which have never been reported by means of atomic fluorescence spectrometry, agree well with the existing reports. The other three are proposed for the first time. Excitation potentials and possible transitions are investigated. Especially for the prominent line at 234.99 nm, the mechanism of generation is discussed and a model of energy transition processes is proposed.

关键词： synchrotron radiation Atomic fluorescence Arsenic Energy transition

Electronic Structure in Cd_(0.96)Zn_(0.04)Te Compound: A synchrotron radiation Photoemission Study

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Chinese Physics Letters 1994年第10期11卷 642-644页

作者： YANG Fengyuan FANG Rongchuan XU Pengshou XU Shihong Department of Physics University of Science and Technology of ChinaHefei 230026 National synchrotron radiation laboratory Hefei 230029

We have studied the electronic structure of clean CdZnTe(111)compound using high resolution synchrotron radiation photoemission *** states were found in Cd,Te 4d core levels and valence *** valence band measurement is... 详细信息

关键词： spectroscopy. method. valence