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Experimental study on fast electron generation during internal crash

Plasma Science and Technology 2021年第4期23卷 30-35页

作者： Chaowei MAI Liqun HU Liqing XU Zhengping LUO Shiyao LIN Yiping CHEN EAST Team Institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China

Hard x-ray(HXR)burst is found during internal crash in the flat top current stage of experimental advanced superconducting tokamak(EAST)discharges and it is caused by fast *** generated electrons during internal crashes may be an operational safety issue in advanced *** an internal crash,locations of fast electron generation from HXR evolution agree with areas of magnetic reconnection from soft x-ray(SXR)tomographic *** statistical analyses show a 27μs time difference between SXR crashes and HXR bursts,and the agreement between time broadening of HXR bursts and estimated characteristic time of magnetic reconnection in *** magnetic reconnections during internal crash are proved to generate fast electrons,by both spatial and temporal agreements.

关键词： EAST internal crash fast electron magnetic reconnection

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Study of the fast electron behavior in electron cyclotron current driven plasma on J-TEXT

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Plasma Science and Technology 2022年第6期24卷 45-52页

作者： Xiaobo ZHANG Wei YAN Zhongyong CHEN Jiangang FANG Junli ZHANG You LI Xixuan CHEN Yunong WEI Ruihai TONG Zhifang LIN Yu ZHONG Lingke MOU Feng LI Weikang ZHANG Lu WANG Donghui XIA Zhonghe JIANG Zhoujun YANG Nengchao WANG Zhipeng CHEN Yonghua DING Yunfeng LIANG Yan PAN the J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China School of Electrical Engineering&Automation Jiangsu Normal UniversityXuzhou 221116People's Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung—PlasmaphysikD-52425 JülichGermany

In J-TEXT tokamak,fast electron bremsstrahlung diagnostic with 9 chords equipped with multichannel analyzer enables detailed studies of the generation and transport of fast *** spatial profiles and energy spectrum of the fast electrons have been measured in two ECCD cases with either on-axis or off-axis injection,and the profiles processed by Abel-inversion are consistent with the calculated power deposition ***,it is observed that the energy of fast electrons increases rapidly after turning off the ECCD,which may be attributed to the acceleration by the recovered loop voltage at low electron density.

关键词： fast electron tokamak electron cyclotron current drive power deposition location

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fast electron dynamics in lower hybrid current drive experiment on HT-7 tokamak

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Chinese Physics B 2005年第6期14卷 1193-1198页

作者：石跃江万宝年陈忠勇胡立群林士耀阮怀林钱金平甄香君丁伯江匡光力李建刚 HT-7Team InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031China

The dynamic behaviour of fast electron in lower hybrid current drive (LHCD) experiments is a crucial issue in the sense of enhancing plasma performance. A new hard x-ray diagnostic system on HT-7 allows the investigation of the lower hybrid wave dynamics. The behaviour of fast electron is studied in several kinds of LHCD experiments, including long pulse discharges, high performance discharges and counter-LHCD experiments.

关键词： fast electron hard x-ray lower hybrid waves

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Preface for the Special Column of Carbon Materials for Energy Conversion

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Journal of Natural Gas Chemistry 2012年第3期21卷 I0001-I0001页

作者：潘秀燕 State Key Laboratory of Catalysis Dalian Institute of Chemical Physics the Chinese Academy of Sciences

Carbon is one of the few elements known since ancient time. It exists as diamond and graphite in nature. Since synthetic carbon became available almost a century ago, it has been widely used in many fields and the best known applications are adsor- bents and catalyst supports. Development of material science and nanotechnologies has allowed tailored design and synthesis of carbon allotropes with markedly different properties by combining the basic building blocks in different configurations. This has led to the discovery of Buckminsterfullerene or buckyball （C60）, carbon nanotubes （CNTs）, and graphene, and their derivatives within last 30 years highlighted by several Nobel Prize awards.

关键词： Energy Conversion design and synthesis chemical stability surface chemistry functional groups material science building blocks materials for fast electron carbon black used in

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