فيزياء البلازما
A linear analysis was performed to investigate the basic properties of waves propagating in different directions in magnetized quantam plasma consisting of classical warm ions and relativistic degenerate electrons. We employ a quantum magnetohydrodynamic approach considering quantum corrections, spin effects in addition to relativity, and a polytropic index to obtain a generalized dispersion relation of the regarded plasma system. The considered system supports three types of magnetohydrodynamic waves: Alfven, fast, and slow magnetosonic waves. The obtained modified Alfven and magnetosonic dispersion relations are affected by the obliqueness factor, spin magnetization, and plasma beta .The fast and slow modes were also altered owing to the Bohm potential and relativistic degenerate pressure impacts. Examination of the influences of these parameters revealed a significant modification of the phase velocity features of the magnetohydrodynamic waves. The results obtained may be applicable to relativistic magnetized quantum plasmas in astrophysical environments.
Yusra A. A. Hager، Mahmood A. H. Khaled، Mohamed A. Shukri (المؤلف) (2023). Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma. مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا. DOI: https://doi.org/10.59628/jast.v1i4.583
Yusra A. A. Hager، Mahmood A. H. Khaled، Mohamed A. Shukri (المؤلف). “Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, 2023, https://doi.org/10.59628/jast.v1i4.583. Accessed 30 أكتوبر. 2026.
Yusra A. A. Hager، Mahmood A. H. Khaled، Mohamed A. Shukri (المؤلف). 2023. “Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا DOI: https://doi.org/10.59628/jast.v1i4.583
Yusra A. A. Hager، Mahmood A. H. Khaled، Mohamed A. Shukri (المؤلف) (2023) ‘Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma’, مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا. doi: 10.59628/jast.v1i4.583
@article{jast2023_art583,
author = {Yusra A. A. Hager، Mahmood A. H. Khaled، Mohamed A. Shukri (المؤلف)},
title = {Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma},
journal = {مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا}, year = {2023}, month = {ديسمبر}, doi = {10.59628/jast.v1i4.583},
url = {https://doi.org/10.59628/jast.v1i4.583},}
Characteristics of magnetohydrodynamic waves propagating in a magnetized relativistic degenerate plasma
The dust-acoustic (DA) solitary waves and double layers structures of the dust-acoustic waves (DAWs) have been investigated in the framework of Gardner approach, in a non-ideal dusty plasma system consisting of electrons, ions and negatively charged dust grains. The non-ideal effects are examined by incorporating the van der Waals (VDW) equation of state for the dust grains. Using reductive perturbation technique, the Gardner's equation is derived. The effects of the non-ideal parameters on the profiles of solitary wave and double layer structures are discussed in some detail. It is found that the amplitude and width of both solitary waves and double layers are significantly modified by the non-ideal parameters. Also, it is shown that the wave phase velocity undergoes a significant change due to the presence of non-ideal effects in the system.
Mahmood Ahmed Hassan Khaled، Kawkab A. M. Alsa'adi، Ibrahim G. H Loqman (المؤلف) (2024). Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma. مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, 107-115. DOI: https://doi.org/10.59628/jast.v2i2.938
Mahmood Ahmed Hassan Khaled، Kawkab A. M. Alsa'adi، Ibrahim G. H Loqman (المؤلف). “Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, 2024, pp. 107-115. https://doi.org/10.59628/jast.v2i2.938. Accessed 30 أكتوبر. 2026.
Mahmood Ahmed Hassan Khaled، Kawkab A. M. Alsa'adi، Ibrahim G. H Loqman (المؤلف). 2024. “Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا : 107-115. DOI: https://doi.org/10.59628/jast.v2i2.938
Mahmood Ahmed Hassan Khaled، Kawkab A. M. Alsa'adi، Ibrahim G. H Loqman (المؤلف) (2024) ‘Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma’, مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, pp. 107-115. doi: 10.59628/jast.v2i2.938
@article{jast2024_art938,
author = {Mahmood Ahmed Hassan Khaled، Kawkab A. M. Alsa'adi، Ibrahim G. H Loqman (المؤلف)},
title = {Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma},
journal = {مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا}, year = {2024}, month = {مايو}, pages = {107-115}, doi = {10.59628/jast.v2i2.938},
url = {https://doi.org/10.59628/jast.v2i2.938},}
Solitary waves and double layers of dust-acoustic waves propagating in a non-ideal dusty plasma
A two-dimensional Zakharov Kuznetsov (ZK) equation was derived for ion-acoustic (IA) solitons in magnetoplasmas with relativistic streaming warm ions, superthermal electrons and positrons, and stationary heavy ions (either positive or negative). The transverse instability of the IA solitons was investigated using the small- κ perturbation expansion method. The effects of plasma parameters such as the concentration of positive/negative heavy ions, relativistic streaming velocity of ions, superthermality of electrons and positrons, positron concentration, ion temperature, and magnetic field strength on the instability of IA solitons are investigated. These parameters have a significant effect on the instability growth rate. The results also indicate that the solitons tended to be stable in the plasma model containing negatively charged heavy ions. The findings of this work may provide valuable insights into the understanding of astrophysical systems, especially in the context of pulsar magnetospheres, solar wind, and Van Allen radiation belts, where relativistic ions and superthermal electron-positron coexist with heavy ions.
Hilal H. AL-Jawhari، Mahmood A. H. Khaled (المؤلف) (2025). Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons. مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, 1398-1407. DOI: https://doi.org/10.59628/jast.v3i6.1940
Hilal H. AL-Jawhari، Mahmood A. H. Khaled (المؤلف). “Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, 2025, pp. 1398-1407. https://doi.org/10.59628/jast.v3i6.1940. Accessed 30 أكتوبر. 2026.
Hilal H. AL-Jawhari، Mahmood A. H. Khaled (المؤلف). 2025. “Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons.” مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا : 1398-1407. DOI: https://doi.org/10.59628/jast.v3i6.1940
Hilal H. AL-Jawhari، Mahmood A. H. Khaled (المؤلف) (2025) ‘Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons’, مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, pp. 1398-1407. doi: 10.59628/jast.v3i6.1940
@article{jast2025_art1940,
author = {Hilal H. AL-Jawhari، Mahmood A. H. Khaled (المؤلف)},
title = {Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons},
journal = {مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا}, year = {2025}, month = {ديسمبر}, pages = {1398-1407}, doi = {10.59628/jast.v3i6.1940},
url = {https://doi.org/10.59628/jast.v3i6.1940},}
Transverse Instability of Relativistic Ion-Acoustic Solitons in a Magnetized Space Plasmas with Heavy Ions and Superthermal Pair Electrons
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مجلة جامعة صنعاء
للعلوم التطبيقية والتكنولوجيا
مجلة علمية محكمة ومتاحة للجميع، تنشر أبحاثاً عالية الجودة في مجالات العلوم التطبيقية والهندسة والحاسوب منذ عام 2023.