Kinetic Theory for Distribution Functions of Wave-Particle Interactions in Plasmas

被引：21

作者：

Kominis, Y. ^{[1
]}

Ram, A. K. ^{[2
]}

Hizanidis, K. ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Sch Elect & Comp Engn, Assoc EURATOM Hellen Republ, GR-15773 Zografos, Greece

[2] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 23期

关键词：

QUASI-LINEAR THEORY; NONQUASILINEAR DIFFUSION; MARKOVIAN APPROXIMATION; TURBULENCE;

D O I：

10.1103/PhysRevLett.104.235001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The evolution of a charged particle distribution function under the influence of coherent electromagnetic waves in a plasma is determined from kinetic theory. For coherent waves, the dynamical phase space of particles is an inhomogeneous mix of chaotic and regular orbits. The persistence of long time correlations between the particle motion and the phase of the waves invalidates any simplifying Markovian or statistical assumptions-the basis for usual quasilinear theories. The generalized formalism in this Letter leads to a hierarchy of evolution equations for the reduced distribution function. The evolution operators, in contrast to the quasilinear theories, are time dependent and nonsingular and include the rich phase space dynamics of particles interacting with coherent waves.

引用

页数：4

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