The transition from the classical to the quantum regime in nonlinear Landau damping

被引：16

作者：

Brodin, G. ^{[1
]}

Zamanian, J. ^{[1
]}

Mendonca, J. T. ^{[2
]}

机构：

[1] Umea Univ, Dept Phys, SE-90187 Umea, Sweden

[2] Inst Super Tecn, IPFN, P-1049001 Lisbon, Portugal

来源：

PHYSICA SCRIPTA | 2015年 / 90卷 / 06期

关键词：

quantum plasma; wave-particle interaction; bounce oscillations;

D O I：

10.1088/0031-8949/90/6/068020

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Starting from the Wigner-Moyal equation coupled to Poisson's equation, a simplified set of equations describing nonlinear Landau damping of Langmuir waves is derived. This system is studied numerically, with a particular focus on the transition from the classical to the quantum regime. In the quantum regime several new features are found. This includes a quantum modified bounce frequency, and the discovery that bounce-like amplitude oscillations can take place even in the absence of trapped particles. The implications of our results are discussed.

引用

页数：9

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