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首页> 外文期刊>Physics of plasmas >The effects of cool ion temperature on fast ion-acoustic soliton stopbands in a plasma with two positive ion species
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The effects of cool ion temperature on fast ion-acoustic soliton stopbands in a plasma with two positive ion species

机译:冷离子温度对具有两种阳性离子物种的血浆快速离子声孤子阻带的影响

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摘要

The existence of stopbands was reported for the very first time in a study of fast ion-acoustic solitons by Nsengiyumva et al. [Phys. Plasmas 21, 102301 (2014)] in a plasma with cold ions, warm (adiabatic) ions, and Boltzmann electrons. We recall that a stopband is a range of speeds (Mach numbers) for which solitons cannot propagate. In this paper, we investigate the effect of the temperature of the cooler ions on stopbands. It is found that the Mach number range for the stopbands and the range of cool ion densities over which the stopbands occur become narrower with increasing temperature of the cooler ions, until the stopbands vanish at an upper limiting value. The extension of the model to include nonthermal effects for the electrons reveals that the range of cool ion temperatures which favors the existence of stopbands becomes wider for a kappa electron distribution, but narrower when the electrons are Cairns distributed for increasing strength of the nonthermal coefficient. Published under license by AIP Publishing.
机译:阻带的存在,报道了在快离子声孤子由Nsengiyumva案等的研究的第一次。 [物理。等离子体21,102301(2014)]在用冷的离子,暖(绝热)离子,和玻尔兹曼电子的等离子体。我们记得孤子不能传播的速度(马赫数)的范围。在本文中,我们研究了冷却器离子温度对托带的影响。发现停机带的马赫数范围和止动脉冲发生的冷却离子密度范围随着冷却离子的升高而变窄,直到止动件在上限值下消失。模型的延伸包括用于电子的非热效果,揭示了对κ电子分布的封闭存在的冷离子温度的范围变得更宽,但是当电子是凯恩斯分布以增加非热系数强度时较窄。通过AIP发布在许可证下发布。

著录项

  • 来源
    《Physics of plasmas》 |2019年第5期|共10页
  • 作者

    Maharaj S. K.; Bharuthram R.;

  • 作者单位

    South African Natl Space Agcy SANSA Space Sci POB 32 ZA-7200 Hermanus South Africa;

    Univ Western Cape Dept Phys &

    Astron Robert Sobukwe Rd ZA-7535 Bellville South Africa;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

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