Damping of the trapped-particle diocotron mode

被引：13

作者：

Hilsabeck, TJ ^{[1
]}

Kabantsev, AA ^{[1
]}

Driscoll, CF ^{[1
]}

O'Neil, TM ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.90.245002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The damping mechanism of a recently discovered trapped-particle mode is identified as collisional velocity scattering of marginally trapped particles. The mode exists on non-neutral plasma columns that are partially divided by an electrostatic potential. This damping mechanism is similar to that responsible for damping of the dissipative trapped-ion mode. The damping rate is calculated using a Fokker-Planck analysis and agrees with measurement to within 50%. Also, an experimental signature confirms a causal relation between scattering of marginally trapped particles and damping.

引用

页码：245002/1 / 245002/4

页数：4

共 7 条

[1]

GUREVICH AV, 1968, SOV PHYS JETP-USSR, V26, P575

[2]

KABANTSEV A, 2001, PHYS REV LETT, V87

[3]

KADOMTSEV BB, 1967, ZH EKSP TEOR FIZ, V24, P1172

[4]

LANDAU LD, 1979, FLUID MECH

[5] EXPERIMENTAL-STUDY OF THE DISSIPATIVE TRAPPED ION INSTABILITY [J].

NAVRATIL, GA ;

SEN, AK ;

SLOUGH, J .

PHYSICS OF FLUIDS, 1983, 26 (04) :1044-1053

[6] STABILITY REGIONS OF DISSIPATIVE TRAPPED-ION INSTABILITY [J].

ROSENBLU.MN ;

ROSS, DW ;

KOSTOMAR.DP .

NUCLEAR FUSION, 1972, 12 (01) :3-&

[7] MICRO-INSTABILITY THEORY IN TOKAMAKS [J].

TANG, WM .

NUCLEAR FUSION, 1978, 18 (08) :1089-1160

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