Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force

doi:10.1088/1674-1056/ac0421

中国物理B ›› 2022, Vol. 31 ›› Issue (1): 10505-010505.doi: 10.1088/1674-1056/ac0421

Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force

Mahmood A. H. Khaled¹, Mohamed A. Shukri², and Yusra A. A. Hager^3,†

1 Department of Physics, Faculty of Education(Al-Mahweet), Sana'a University, Sana'a, Yemen;
2 Department of Physics, Faculty of Science, Sana'a University, Sana'a, Yemen;
3 Department of Physics, Faculty of Education, Sana'a University, Sana'a, Yemen

收稿日期:2021-01-24 修回日期:2021-05-16 接受日期:2021-05-24 出版日期:2021-12-03 发布日期:2021-12-31
通讯作者: Yusra A. A. Hager E-mail:hager22013@gmail.com

Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force

Mahmood A. H. Khaled¹, Mohamed A. Shukri², and Yusra A. A. Hager^3,†

1 Department of Physics, Faculty of Education(Al-Mahweet), Sana'a University, Sana'a, Yemen;
2 Department of Physics, Faculty of Science, Sana'a University, Sana'a, Yemen;
3 Department of Physics, Faculty of Education, Sana'a University, Sana'a, Yemen

Received:2021-01-24 Revised:2021-05-16 Accepted:2021-05-24 Online:2021-12-03 Published:2021-12-31
Contact: Yusra A. A. Hager E-mail:hager22013@gmail.com

摘要/Abstract

摘要： Linear and nonlinear dust acoustic (DA) waves have been investigated in an opposite polarity dusty plasma comprising negatively and positively charged dust grains, Maxwellian electrons and ions, including the generalized polarization force effect. The properties of linear DA waves have been significantly altered by the dual dust polarity and polarization force. Large amplitude DA solitons have been discussed in the framework of the Sagdeev potential technique. Our results show that both rarefactive and compressive solitons can exist in such a dusty plasma. The basic features of the Sagdeev potential have been examined under the effect of the polarization force parameter R, the ratio of the charge number of the positive dust to that of the negative dust Z, and the Mach number M. The results show that these parameters play a significant role in determining the region of existence of large amplitude DA solitons.

关键词: large amplitude, opposite polarity dusty plasma, polarization force

Abstract: Linear and nonlinear dust acoustic (DA) waves have been investigated in an opposite polarity dusty plasma comprising negatively and positively charged dust grains, Maxwellian electrons and ions, including the generalized polarization force effect. The properties of linear DA waves have been significantly altered by the dual dust polarity and polarization force. Large amplitude DA solitons have been discussed in the framework of the Sagdeev potential technique. Our results show that both rarefactive and compressive solitons can exist in such a dusty plasma. The basic features of the Sagdeev potential have been examined under the effect of the polarization force parameter R, the ratio of the charge number of the positive dust to that of the negative dust Z, and the Mach number M. The results show that these parameters play a significant role in determining the region of existence of large amplitude DA solitons.

Key words: large amplitude, opposite polarity dusty plasma, polarization force

中图分类号: (Solitons)

05.45.Yv

52.27.Lw (Dusty or complex plasmas; plasma crystals) 94.05.Fg (Solitons and solitary waves)

Mahmood A. H. Khaled, Mohamed A. Shukri, and Yusra A. A. Hager. Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force[J]. 中国物理B, 2022, 31(1): 10505-010505.

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Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force

Large-amplitude dust acoustic solitons in an opposite polarity dusty plasma with generalized polarization force

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