中国物理B ›› 2022, Vol. 31 ›› Issue (8): 86102-086102.doi: 10.1088/1674-1056/ac5c34

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Radiation effects of electrons on multilayer FePS3 studied with laser plasma accelerator

Meng Peng(彭猛)1, Jun-Bo Yang(杨俊波)1,†, Hao Chen(陈浩)2, Bo-Yuan Li(李博源)3, Xu-Lei Ge(葛绪雷)3, Xiao-Hu Yang(杨晓虎)1, Guo-Bo Zhang(张国博)1, and Yan-Yun Ma(马燕云)4,‡   

  1. 1 Department of Physics, National University of Defense Technology, Changsha 410072, China;
    2 College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518000, China;
    3 Key Laboratory for Laser Plasmas(MoE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    4 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2021-11-04 修回日期:2022-02-12 接受日期:2022-03-10 出版日期:2022-07-18 发布日期:2022-07-23
  • 通讯作者: Jun-Bo Yang, Yan-Yun Ma E-mail:yangjunbo@nudt.edu.cn;yanyunma@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975308), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25050200), and Science Challenge Project (Grant No. TZ2018001).

Radiation effects of electrons on multilayer FePS3 studied with laser plasma accelerator

Meng Peng(彭猛)1, Jun-Bo Yang(杨俊波)1,†, Hao Chen(陈浩)2, Bo-Yuan Li(李博源)3, Xu-Lei Ge(葛绪雷)3, Xiao-Hu Yang(杨晓虎)1, Guo-Bo Zhang(张国博)1, and Yan-Yun Ma(马燕云)4,‡   

  1. 1 Department of Physics, National University of Defense Technology, Changsha 410072, China;
    2 College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518000, China;
    3 Key Laboratory for Laser Plasmas(MoE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    4 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
  • Received:2021-11-04 Revised:2022-02-12 Accepted:2022-03-10 Online:2022-07-18 Published:2022-07-23
  • Contact: Jun-Bo Yang, Yan-Yun Ma E-mail:yangjunbo@nudt.edu.cn;yanyunma@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975308), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25050200), and Science Challenge Project (Grant No. TZ2018001).

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摘要： Space radiation with inherently broadband spectral flux poses a huge danger to astronauts and electronics on aircraft, but it is hard to simulate such feature with conventional radiation sources. Using a tabletop laser-plasma accelerator, we can reproduce exponential energy particle beams as similar as possible to these in space radiation. We used such an electron beam to study the electron radiation effects on the surface structure and performance of two-dimensional material (FePS3). Energetic electron beam led to bulk sample cleavage and damage between areas of uneven thickness. For the FePS3 sheet sample, electron radiation transformed it from crystalline state to amorphous state, causing the sample surface to rough. The full widths at the half maximum of characteristic Raman peaks became larger, and the intensities of characteristic Raman peaks became weak or even disappeared dramatically under electron radiation. This trend became more obvious for thinner samples, and this phenomenon was attributed to the cleavage of P-P and P-S bonds, destabilizing the bipyramid structure of [P2S6]4- unit. The results are of great significance for testing the maximum allowable radiation dose for the two-dimensional material, implying that FePS3 cannot withstand such energetic electron radiation without an essential shield.

关键词: space radiation, laser-plasma interaction, two-dimensional material, Raman spectroscopy

Abstract: Space radiation with inherently broadband spectral flux poses a huge danger to astronauts and electronics on aircraft, but it is hard to simulate such feature with conventional radiation sources. Using a tabletop laser-plasma accelerator, we can reproduce exponential energy particle beams as similar as possible to these in space radiation. We used such an electron beam to study the electron radiation effects on the surface structure and performance of two-dimensional material (FePS3). Energetic electron beam led to bulk sample cleavage and damage between areas of uneven thickness. For the FePS3 sheet sample, electron radiation transformed it from crystalline state to amorphous state, causing the sample surface to rough. The full widths at the half maximum of characteristic Raman peaks became larger, and the intensities of characteristic Raman peaks became weak or even disappeared dramatically under electron radiation. This trend became more obvious for thinner samples, and this phenomenon was attributed to the cleavage of P-P and P-S bonds, destabilizing the bipyramid structure of [P2S6]4- unit. The results are of great significance for testing the maximum allowable radiation dose for the two-dimensional material, implying that FePS3 cannot withstand such energetic electron radiation without an essential shield.

Key words: space radiation, laser-plasma interaction, two-dimensional material, Raman spectroscopy

中图分类号:  (Structure of carbon nanotubes, boron nanotubes, and other related systems)

  • 61.48.De
68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties) 72.90.+y (Other topics in electronic transport in condensed matter)