Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (8): 78 doi: 10.1007/s41365-020-00783-w

• ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Attenuation characteristics of electromagnetic waves in plasma generated by coating radionuclide on surface structures

Sheng Lai1 • Xiao-Bin Tang1,2 • Jun-Xu Mu1 • Zhao-Peng Feng1 • Yun-Peng Liu1,2   

  1. 1 Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2 Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics, Ministry of Industry and Information Technology, Nanjing 210016, China
  • Received:2020-04-19 Revised:2020-06-14 Accepted:2020-06-18
  • Contact: Xiao-Bin Tang E-mail:tangxiaobin@nuaa.edu.cn
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Sheng Lai, Xiao-Bin Tang, Jun-Xu Mu, Zhao-Peng Feng, Yun-Peng Liu. Attenuation characteristics of electromagnetic waves in plasma generated by coating radionuclide on surface structures.Nuclear Science and Techniques, 2020, 31(8): 78     doi: 10.1007/s41365-020-00783-w
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Abstract: Stealth technology plays an important role in modern military conflicts, especially when used in fighter jets. Since airfoil structures have a leading edge, inlet, and surface bulge that are easily detected by radar, it is necessary to study the stealth of these structures. In this study, we investigate structures coated with radionuclides to generate plasma. Using simulation and calculation methods, the attenuation of 0.1–10 GHz electromagnetic waves propagating in plasma was studied. The results showed that the attenuation of low-frequency electromagnetic waves is greater than that of high-frequency electromagnetic waves. The attenuation of 0.1–1 GHz electromagnetic waves is found to be less than - 2.7 dB, - 3.0 dB, and - 15.6 dB at the airfoil leading edge, inlet, and surface bulge structures, respectively. We also found that the attenuation of electromagnetic waves with 0o-incidence is greater than that of waves with 10o, 20o, and 30o incidence angles. Additionally, the attenuation of electromagnetic waves decreases gradually as the incident angle increases.

Key words: Plasma stealth, Radionuclide coating, Electromagnetic waves, Numerical simulation