Alfven wave propagation in a partially ionized plasma

被引：33

作者：

Watts, C ^{[1
]}

Hanna, J

机构：

[1] New Mexico Inst Min & Technol, Dept Phys, Socorro, NM 87801 USA

[2] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

来源：

PHYSICS OF PLASMAS | 2004年 / 11卷 / 04期

关键词：

D O I：

10.1063/1.1649993

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Results from a laboratory study of the dispersion relation of Alfven waves propagating through a partially ionized plasma are presented. The plasma is generated using a helicon source, creating a high density, current-free discharge, where the source can be adjusted to one of several modes with varying neutral fraction. Depending on the neutral fraction, the measured dispersion curve of shear Alfven waves can change significantly. Measurement results are compared with theoretical predictions of the effect of neutral particles on Alfven wave propagation. In fitting the theory, the neutral fraction is independently estimated using two simple particle transport models, one collisionless, the other collisional. The two models predict comparable neutral fractions, and agree well with the neutral fraction required for the Alfven dispersion theory. (C) 2004 American Institute of Physics.

引用

页码：1358 / 1365

页数：8

共 31 条

[1] Thermal coupling of protons and neutral hydrogen in the fast solar wind [J].

Allen, LA ;

Habbal, SR ;

Hu, YQ .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1998, 103 (A4) :6551-6569

[2] Global fast and slew elf-waves as deduced from the multistationed low-and subauroral geomagnetic measurements [J].

Alperovich, L ;

Zheludev, V .

SUBAURORAL IONOSPHERE, PLASMASPHERE, RING CURRENT AND INNER MAGNETOSPHERE SYSTEM, 1997, 20 (03) :513-516

[3] EXCITATION OF MHD SURFACE-WAVES PROPAGATING WITH SHEAR ALFVEN WAVES IN AN INHOMOGENEOUS CYLINDRICAL PLASMA [J].

AMAGISHI, Y ;

SAEKI, K ;

DONNELLY, IJ .

PLASMA PHYSICS AND CONTROLLED FUSION, 1989, 31 (05) :675-691

[4] LABORATORY EXPERIMENT ON KINETIC ALFVEN WAVES IN CONNECTION WITH PHENOMENA IN SPACE PLASMAS [J].

AMAGISHI, Y .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 1992, 20 (06) :622-625

[5]

BOSTICK W, 1952, PHYS REV, V94, P815

[6] SOME FEATURES OF RF EXCITED FULLY IONIZED LOW-PRESSURE ARGON PLASMA [J].

BOSWELL, R ;

PORTEOUS, R ;

PRYTZ, A ;

BOUCHOULE, A ;

RANSON, P .

PHYSICS LETTERS A, 1982, 91 (04) :163-166

[7]

BOSWELL RW, 1984, PLASMA PHYS CONTR F, V26, P1147, DOI 10.1088/0741-3335/26/10/001

[8] Physics of helicon discharges [J].

Chen, FF .

PHYSICS OF PLASMAS, 1996, 3 (05) :1783-1793

[9]

COMPTON C, 2002, B AM PHYS SOC, V47

[10]

Cross R., 1988, INTRO ALFVEN WAVES

← 1 2 3 4 →