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Observation of the reversed Cherenkov radiation

Author

Listed:
  • Zhaoyun Duan

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China)

  • Xianfeng Tang

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China)

  • Zhanliang Wang

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China)

  • Yabin Zhang

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China)

  • Xiaodong Chen

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China
    School of Electronic Engineering and Computer Science, Queen Mary, University of London)

  • Min Chen

    (Massachusetts Institute of Technology)

  • Yubin Gong

    (National Key Laboratory of Science and Technology on Vacuum Electronics in Chengdu, Institute of High Energy Electronics, School of Physical Electronics, University of Electronic Science and Technology of China)

Abstract

Reversed Cherenkov radiation is the exotic electromagnetic radiation that is emitted in the opposite direction of moving charged particles in a left-handed material. Reversed Cherenkov radiation has not previously been observed, mainly due to the absence of both suitable all-metal left-handed materials for beam transport and suitable couplers for extracting the reversed Cherenkov radiation signal. In this paper, we develop an all-metal metamaterial, consisting of a square waveguide loaded with complementary electric split ring resonators. We demonstrate that this metamaterial exhibits a left-handed behaviour, and we directly observe the Cherenkov radiation emitted predominantly near the opposite direction to the movement of a single sheet electron beam bunch in the experiment. These observations confirm the reversed behaviour of Cherenkov radiation. The reversed Cherenkov radiation has many possible applications, such as novel vacuum electronic devices, particle detectors, accelerators and new types of plasmonic couplers.

Suggested Citation

  • Zhaoyun Duan & Xianfeng Tang & Zhanliang Wang & Yabin Zhang & Xiaodong Chen & Min Chen & Yubin Gong, 2017. "Observation of the reversed Cherenkov radiation," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14901
    DOI: 10.1038/ncomms14901
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    Cited by:

    1. Xiangdong Guo & Chenchen Wu & Shu Zhang & Debo Hu & Shunping Zhang & Qiao Jiang & Xiaokang Dai & Yu Duan & Xiaoxia Yang & Zhipei Sun & Shuang Zhang & Hongxing Xu & Qing Dai, 2023. "Mid-infrared analogue polaritonic reversed Cherenkov radiation in natural anisotropic crystals," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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