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Observation of two threshold fields for runaway-electron generation in tokamaks

机译：观察Tokamak中失控 - 电子发电的两个阈值场

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摘要

Two different threshold electric fields, characterizing a lower field required for significant seed RE generation and sustainment and a higher field required for the RE avalanche onset, have been experimentally observed in the flattop of EAST discharges. These results demonstrate that the threshold electric field for the RE avalanche onset is 1.2-fold higher than the RE detection onset field required for the primary generation. An updated 0-D model, including the delay in the RE avalanche onset, suggests that the RE population should be less than the previous prediction. The delay in the RE avalanche onset also opens a possibility for RE suppression at relatively low electron density.
机译：两种不同的阈值电场，表征了大量种子重新生成和维持所需的较低领域以及Re Avalanche发作所需的更高领域，在东排放阶层已经在实验中观察到。这些结果表明，RE Avalanche发作的阈值电场比初级生成所需的RE检测开始场高1.2倍。更新的0-D模型，包括Re Avalanche发作的延迟，表明RE群体应小于先前的预测。 Re Avalanche发作的延迟还打开了以相对低的电子密度重新抑制的可能性。

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  • 来源
    《Nuclear fusion》 |2020年第8期|084002.1-084002.6|共6页
  • 作者

    X. Zhu; L. Zeng; Y. Liang; S. Lin; Y. Liu; H. Liu; H.R. Koslowski; N. W. Eidietis; J. Zhang; R. Zhou; H. Zhao; A. Ti; J. Qian; Y. Jie; S. Zhang; X. Gao;

  • 作者单位

    Advanced Energy Research Center Shenzhen University Shenzhen 518060 China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China ForschungszentrumJuelich GmbH Institute of Energy and Climate Research - Plasma Physics (IEK-4) 52425 Juelich Germany;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    ForschungszentrumJuelich GmbH Institute of Energy and Climate Research - Plasma Physics (IEK-4) 52425 Juelich Germany;

    General Atomics San Diego CA 92186 United States of America;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

    Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    runaway electron; avalanche process; EAST tokamak; threshold field;

    机译：失控电子;雪崩进程;东托卡马克;门槛字段;

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