X-ray Optics|2 Article(s)
Theoretical and Technical Research of X-ray Communication in Plasma Sheath
Tong SU, Lizhi SHENG, Yongan LIU, Xuehan ZHANG, Yifan LIU, and Baosheng ZHAO
Because of the imperfect theoretical model and insufficient experimental verification technologies, the problem of information transmission in the plasma sheath has not yet been resolved. In this paper, the interaction mechanism between X-ray photons and plasma is studied firstly, and a modified theoretical model is provided through numerical calculation and theoretical modeling. Different from the conclusion that X-rays can penetrate plasma without attenuation in the traditional wave model, the modified theoretical model established in this paper points out that the transmittance of X-rays in plasma is closely related to plasma electron density and incident X-ray flux. Secondly, an experimental system was built using a grid-controlled X-ray modulation emission source, a single-photon X-ray detector, and a dynamic plasma generator. Using this system, the non-uniform plasma which electron density ranges from 109/cm3 to 1014/cm3 is generated, and the X-ray communication with 1 Mbps communication rante and 10-5 bit error rate is also verified. The experimental results indicate that the modified theoretical model can explain and predict the experimental phenomena, and the experimental system can provide the solution for solving the communication problems in the plasma sheath.
Acta Photonica Sinica
  • Publication Date: Nov. 25, 2021
  • Vol. 50, Issue 11, 1134001 (2021)
Theoretical and Experimental Research of X-ray Communication in Shielded Environment
Xuehan ZHANG, Tong SU, Lizhi SHENG, Yongan LIU, and Baosheng ZHAO
Based on the theoretical model of the interaction between X-rays and matter, the transmission characteristics of X-rays in an electromagnetic shielding environment are studied, and the feasibility of X-rays communication for information transmission in an electromagnetic shielding environment is theoretically demonstrated. After that, a numerical simulation model of X-ray communication in a shielded environment is established, and the communication parameters of X-rays in an electromagnetic shielded environment are analyzed to achieve the index constraint of the core components. Finally, based on the key technologies of X-ray modulated emission and single-photon X-ray detection, an equivalent verification experiment of X-ray passing through the shielding material is conducted to realize the experimental verification of X-ray communication with a communication rate better than 23 kbps. The results are expected to provide some theoretical basis and experimental foundation for solving the radiation data transmission in a shielded environment.
Acta Photonica Sinica
  • Publication Date: Nov. 25, 2021
  • Vol. 50, Issue 11, 1134002 (2021)