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 ›› 2015, Vol. 26 ›› Issue (4): 040502 doi: 10.13538/j.1001-8042/nst.26.040502

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Influence of plasma induced by radionuclide layer on the radar cross section of spherical objects

LIU Wei,ZHU Jia-Zhu,CUI Chi,WANG Xiang,ZHANG Shi-Yuan, ZHANG Rui-Li,TANG Tao,HUANG Run-Sheng   

  1. School of Physics, Nanjing University, Nanjing 210093, China
  • Contact: HUANG Run-Sheng E-mail:rhuang@nju.edu.cn
  • Supported by:

    Supported by National Natural Science Foundation of China (Nos. 50977042 and 10904061) and the program of Minisity of Science and Technology of China (No. 2006AA03Z458)

LIU Wei, ZHU Jia-Zhu, CUI Chi, WANG Xiang, ZHANG Shi-Yuan, . Influence of plasma induced by radionuclide layer on the radar cross section of spherical objects.Nuclear Science and Techniques, 2015, 26(4): 040502     doi: 10.13538/j.1001-8042/nst.26.040502

Abstract:

The influence of the α-decay radionuclide layer (the energy of α-particles are 5.45 MeV) on the radar cross section (RCS) of sphere objects was calculated under different radioactivities, frequencies, and sphere radii. When the sphere radius is smaller than 50 cm, the tendency of the electron densities of the plasma slab is to ascend first and then descend, and the typical maximum electron densities with a radioactivity of 10 Ci/cm2 raises from 7.02× 1010 to 1.76× 1011 when the sphere radii increases from 10 to 300 cm. The average data of a normalized RCS of a sphere with radius of 12.5 cm, which is coated with a radionuclide layer with different radioactivities are −0.35, −0.50, −0.79 and −1.13 dB when the radioactivity is 1, 2, 5 and 10 Ci/cm2, respectively.

Key words: Electromagnetic radiation, Plasma; α-particles, Radar cross section, Sphere object