Attenuation characteristics of obliquely incident electromagnetic wave in weakly ionized dusty plasma based on modified Bhatnagar-Gross-Krook collision model

doi:10.1088/1674-1056/abe230

中国物理B ›› 2021, Vol. 30 ›› Issue (4): 45203-.doi: 10.1088/1674-1056/abe230

收稿日期:2020-12-20 修回日期:2021-01-24 接受日期:2021-02-02 出版日期:2021-03-16 发布日期:2021-04-02

Attenuation characteristics of obliquely incident electromagnetic wave in weakly ionized dusty plasma based on modified Bhatnagar-Gross-Krook collision model

Zhaoying Wang(王召迎), Lixin Guo(郭立新)^†, and Jiangting Li(李江挺)

1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China

Received:2020-12-20 Revised:2021-01-24 Accepted:2021-02-02 Online:2021-03-16 Published:2021-04-02
Contact: ^†Corresponding author. E-mail: lxguo@xidian.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. U20B2059 and 61627901), the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 61621005), the Natural Science Foundation of Shaanxi Province of China (Grant No. 2019JM-206), the National Key Laboratory Foundation of China (Grant No. HTKJ2019KL504014), the Fundamental Research Funds for the Central Universities, China, and the Innovation Fund of Xidian University and the 111 Project (Grant No. B17035).

摘要/Abstract

Abstract: The attenuation characteristics of obliquely incident electromagnetic (EM) wave in L-Ka frequency band in weakly ionized dusty plasma are analyzed based on the modified Bhatnagar-Gross-Krook (BGK) collision model. According to the kinetic equation and the charging theory, the total complex dielectric constant of the weakly ionized dusty plasma is derived by considering that the minimum velocity of the electron accessible to the dust particle surface is non-zero and the second potential part of the collision cross-section contributes to the charging. The attenuation characteristics within the modified model are compared with those within the traditional model. The influence of the dusty plasma parameters and the incident angle of EM waves on the attenuation in weakly ionized dusty plasma is further analyzed. Finally, the influence of different reentry heights on the attenuation characteristics of the obliquely incident EM wave is discussed. The results show that the effect of the minimum electron velocity and the second term of the collision cross-section on the attenuation characteristics of EM waves cannot be ignored. When the dust density and dust radius are changed, the trends of the attenuation of obliquely incident EM waves are consistent, but the influence of dust density is weaker than that of dust radius due to the constraint of orbit-limited motion (OLM) theory. The plasma thickness, electron density, and incident angle are proportional to the attenuation amplitude of EM waves. The effect of different reentry heights on the attenuation obliquely incident EM waves is related to the electron density and plasma thickness.

Key words: dusty plasma, electromagnetic wave absorption, electromagnetic propagation, plasma sheaths

中图分类号: (Dielectric properties)

52.25.Mq

52.27.Lw (Dusty or complex plasmas; plasma crystals) 52.40.Kh (Plasma sheaths) 94.30.Tz (Electromagnetic wave propagation)

. [J]. 中国物理B, 2021, 30(4): 45203-.

Zhaoying Wang(王召迎), Lixin Guo(郭立新), and Jiangting Li(李江挺). Attenuation characteristics of obliquely incident electromagnetic wave in weakly ionized dusty plasma based on modified Bhatnagar-Gross-Krook collision model[J]. Chin. Phys. B, 2021, 30(4): 45203-.

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Attenuation characteristics of obliquely incident electromagnetic wave in weakly ionized dusty plasma based on modified Bhatnagar-Gross-Krook collision model

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