中国物理B ›› 2018, Vol. 27 ›› Issue (10): 105204-105204.doi: 10.1088/1674-1056/27/10/105204

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Small amplitude double layers in an electronegative dusty plasma with q-distributed electrons

Zhong-Zheng Li(李中正), Juan-Fang Han(韩娟芳), Dong-Ning Gao(郜东宁), Wen-Shan Duan(段文山)   

  1. 1 Physics of Department, Gansu Normal University for Nationalities, Hezuo 747000, China;
    2 College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of Northwest Normal University, Lanzhou 730070, China
  • 收稿日期:2018-05-02 修回日期:2018-06-27 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Wen-Shan Duan E-mail:duanws@nwnu.edu.cn
  • 基金资助:

    Project supported by the "Strategic Priority Research Program" of the Chinese Academy of Sciences (Grant No. XDA01020304), the National Natural Science Foundation of China (Grant Nos. 11747306 and 11565022), and the Youth Science and Technology Foundation of Gansu Province, China (Grant No. 1606RJYA263).

Small amplitude double layers in an electronegative dusty plasma with q-distributed electrons

Zhong-Zheng Li(李中正)1, Juan-Fang Han(韩娟芳)2, Dong-Ning Gao(郜东宁)2, Wen-Shan Duan(段文山)2   

  1. 1 Physics of Department, Gansu Normal University for Nationalities, Hezuo 747000, China;
    2 College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of Northwest Normal University, Lanzhou 730070, China
  • Received:2018-05-02 Revised:2018-06-27 Online:2018-10-05 Published:2018-10-05
  • Contact: Wen-Shan Duan E-mail:duanws@nwnu.edu.cn
  • Supported by:

    Project supported by the "Strategic Priority Research Program" of the Chinese Academy of Sciences (Grant No. XDA01020304), the National Natural Science Foundation of China (Grant Nos. 11747306 and 11565022), and the Youth Science and Technology Foundation of Gansu Province, China (Grant No. 1606RJYA263).

摘要:

The small amplitude dust ion-acoustic double layers in a collisionless four-component unmagnetized dusty plasma system containing nonextensive electrons, inertial negative ions, Maxwellian positive ions, and negatively charged static dust grains are investigated theoretically. Using the pseudo-potential approach and reductive perturbation method, an energy integral equation for the system has been derived and its solution in the form of double layers is obtained. The results appear that the existence regime of the double layer is very sensitive to the plasma parameters, e.g., electron nonextensivity, negative-to-positive ion number density ratio etc. It has been observed that for the selected set of parameters, the system supports rarefactive, (compressive) double layers depending upon the degree of nonextensivity of electrons.

关键词: dusty plasmas, double layers

Abstract:

The small amplitude dust ion-acoustic double layers in a collisionless four-component unmagnetized dusty plasma system containing nonextensive electrons, inertial negative ions, Maxwellian positive ions, and negatively charged static dust grains are investigated theoretically. Using the pseudo-potential approach and reductive perturbation method, an energy integral equation for the system has been derived and its solution in the form of double layers is obtained. The results appear that the existence regime of the double layer is very sensitive to the plasma parameters, e.g., electron nonextensivity, negative-to-positive ion number density ratio etc. It has been observed that for the selected set of parameters, the system supports rarefactive, (compressive) double layers depending upon the degree of nonextensivity of electrons.

Key words: dusty plasmas, double layers

中图分类号:  (Dusty or complex plasmas; plasma crystals)

  • 52.27.Lw
52.35.Fp (Electrostatic waves and oscillations (e.g., ion-acoustic waves))