Measurement of Landau damping and the evolution to a BGK equilibrium

被引：75

作者：

Danielson, JR ^{[1
]}

Anderegg, F

Driscoll, CF

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.245003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Linear Landau damping and nonlinear wave-particle trapping oscillations are observed with standing plasma waves in a trapped pure electron plasma. For low wave amplitudes, the measured linear damping rate agrees quantitatively with linear Landau damping theory. At larger amplitudes, the wave initially damps at the Landau rate, then regrows and oscillates, approaching a steady state, as predicted by O'Neil in 1965 [Phys. Fluids 8, 2255 (1965)]. This BGK equilibrium is observed to decay slowly due to external dissipation.

引用

页码：245003 / 1

页数：4

共 29 条

[1] Thermally excited modes in a pure electron plasma [J].

Anderegg, F ;

Shiga, N ;

Danielson, JR ;

Dubin, DHE ;

Driscoll, CF ;

Gould, RW .

PHYSICAL REVIEW LETTERS, 2003, 90 (11) :4

[2] MEASUREMENT OF COLLISIONAL ANISOTROPIC TEMPERATURE RELAXATION IN A STRONGLY MAGNETIZED PURE ELECTRON-PLASMA [J].

BECK, BR ;

FAJANS, J ;

MALMBERG, JH .

PHYSICAL REVIEW LETTERS, 1992, 68 (03) :317-320

[3] EXACT NONLINEAR PLASMA OSCILLATIONS [J].

BERNSTEIN, IB ;

GREENE, JM ;

KRUSKAL, MD .

PHYSICAL REVIEW, 1957, 108 (03) :546-550

[4] Direct excitation of high-amplitude chirped bucket-BGK modes [J].

Bertsche, W ;

Fajans, J ;

Friedland, L .

PHYSICAL REVIEW LETTERS, 2003, 91 (26)

[5] Nonlinear Landau damping [J].

Brodin, G .

PHYSICAL REVIEW LETTERS, 1997, 78 (07) :1263-1266

[6] Resonant particle heating of an electron plasma by oscillating sheaths [J].

Cluggish, BP ;

Danielson, JR ;

Driscoll, CF .

PHYSICAL REVIEW LETTERS, 1998, 81 (02) :353-356

[7]

Davidson R.C., 1990, Physics of Nonneutral Plasmas

[8] PARALLEL ENERGY ANALYZER FOR PURE ELECTRON-PLASMA DEVICES [J].

EGGLESTON, DL ;

DRISCOLL, CF ;

BECK, BR ;

HYATT, AW ;

MALMBERG, JH .

PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1992, 4 (10) :3432-3439

[9] DAMPING OF FINITE-AMPLITUDE ELECTRON-PLASMA WAVES IN A COLLISIONLESS PLASMA [J].

FRANKLIN, RN ;

SMITH, GJ ;

HAMBERGER, SM .

PHYSICAL REVIEW LETTERS, 1972, 29 (04) :914-+

[10] NATURE OF INSTABILITY CAUSED BY ELECTRONS TRAPPED BY AN ELECTRON-PLASMA WAVE [J].

FRANKLIN, RN ;

SMITH, GJ ;

IKEZI, H ;

LAMPIS, G ;

HAMBERGER, SM .

PHYSICAL REVIEW LETTERS, 1972, 28 (17) :1114-+

← 1 2 3 →