ION-NEUTRAL COLLISION EFFECT ON AN ALFVEN-WAVE

被引：27

作者：

AMAGISHI, Y ^{[1
]}

TANAKA, M ^{[1
]}

机构：

[1] KYUSHU UNIV,INTERDISCIPLINARY GRAD SCH ENGN SCI,DEPT HIGH ENERGY ENGN SCI,KASUGA,FUKUOKA 816,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.71.360

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper reports that ion-neutral collisions in a magnetized plasma cause a drastic change in the dispersion relation of the shear Alfven wave with poloidal mode number m = 0, connecting to the branch of the m = + 1 compressional Alfven wave at frequencies below the ion-cyclotron frequency. An anomaly of the dispersion then appears on the refractive index curve and a wave packet in this frequency range undergoes strong amplitude damping and profile deformation. It is confirmed that the Kramers-Kronig relation holds for the dielectric function, estimated from both the measured refractive index and damping rate.

引用

页码：360 / 363

页数：4

共 14 条

[1] EXPERIMENTS ON MODE CONVERSION OF M=-1 FAST WAVE INTO SHEAR ALFVEN-WAVE IN A CYLINDRICAL PLASMA [J].

AMAGISHI, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (07) :2374-2381

[2] 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

[3] FORMATION OF SPATIAL ALFVEN RESONANCE AND CUTOFF FIELDS IN AN INHOMOGENEOUS-PLASMA [J].

AMAGISHI, Y ;

TSUSHIMA, A .

PLASMA PHYSICS AND CONTROLLED FUSION, 1984, 26 (12B) :1489-1503

[4] OBSERVATION OF MODE CONVERSION OF M=-1 FAST WAVES ON THE ALFVEN RESONANCE LAYER [J].

AMAGISHI, Y .

PHYSICAL REVIEW LETTERS, 1990, 64 (11) :1247-1249

[5] SPECTRUM OF LOW-FREQUENCY, NONAXISYMMETRIC OSCILLATIONS IN A COLD, CURRENT-CARRYING PLASMA-COLUMN [J].

APPERT, K ;

VACLAVIK, J ;

VILLARD, L .

PHYSICS OF FLUIDS, 1984, 27 (02) :432-437

[6] GUIDED PROPAGATION OF ALFVEN WAVES IN A TOROIDAL PLASMA [J].

BORG, GG ;

BRENNAN, MH ;

CROSS, RC ;

GIANNONE, L ;

DONNELLY, IJ .

PLASMA PHYSICS AND CONTROLLED FUSION, 1985, 27 (10) :1125-1149

[7]

Brillouin L, 1960, WAVE PROPAGATION GRO, DOI [10.1063/1.3057398, DOI 10.1063/1.3057398]

[8] MHD SURFACE-WAVES IN A RESISTIVE CYLINDRICAL PLASMA AT LOW TO ION-CYCLOTRON FREQUENCY [J].

COLLINS, GA ;

CRAMER, NF ;

DONNELLY, IJ .

PLASMA PHYSICS AND CONTROLLED FUSION, 1984, 26 (1B) :273-292

[9]

CROSS C, 1968, PHYS FLUIDS, V11, P2621

[10] DENSITY GRADIENT EFFECTS ON ALFVEN WAVE PROPAGATION IN A CYLINDRICAL PLASMA [J].

MCPHERSON, DA ;

PRIDMORE.DC .

PHYSICS OF FLUIDS, 1966, 9 (10) :2033-+

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