Arbitrary amplitude dust-acoustic (DA) solitary waves in an unmagnetized and collisionless quantum dusty plasma comprising cold dust particles, kappa (e??…)-distributed ions and degenerate electrons are investigated. The influence of suprathermality and quantum effects on the linear dispersion relation of DA waves is investigated. Then, the effect of e??…-distributed ions and degenerate electrons on the existence domain of solitons is discussed in the space of (e?‘€, e?‘“). The comparison of the existence domain for higher and lower values of e??… shows that suprathermality results in propagation of solitons with lower values of Mach number, and the quantum effects, lead to a higher values of Mach number. The existence domain of solitons for nondegenerate e??…-distributed electrons is considered for comparison with effect of degenerate electrons. Also, we found that the Sagdeev potential well becomes deeper and wider as $e??€_{F-i}$ decreases, as for lower e??… values, the influence of quantum effects on the Sagdeev pseudopotential profile is smaller.
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机译:研究了包含冷尘埃粒子,κ(e ^…)分布离子和简并电子的未磁化且无碰撞的量子尘埃等离子体中的任意振幅尘埃声(DA)孤波。研究了超热和量子效应对DA波线性色散关系的影响。然后,讨论了在(e?’,e?’)空间中e ??…分布的离子和简并电子对孤子存在域的影响。对较高和较低eε…值的存在域的比较表明,超热导致具有较低马赫数值的孤子的传播以及量子效应导致较高马赫数值。为了与简并电子的作用进行比较,考虑了非简并e-…-分布电子的孤子的存在域。此外,我们发现随着$ e ??€_ {F-i} $的减小,Sagdeev势阱变得越来越深,对于较低的e ??…值,量子效应对Sagdeev伪势分布的影响较小。
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