Spectroscopic observation of fluctuation-induced dynamo in the edge of the reversed-field pinch

被引：41

作者：

Fontana, PW ^{[1
]}

Den Hartog, DJ ^{[1
]}

Fiksel, G ^{[1
]}

Prager, SC ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.85.566

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The fluctuation-induced dynamo [(v) over tilde x (b) over tilde] has been investigated by direct measurement of (v) over tilde and (b) over tilde in the edge of a reversed-field pinch and is found to be significant in balancing Ohm's law. The velocity fluctuations producing the dynamo emf have poloidal mode number m = 0, consistent with MHD calculations and in contrast with the core In = 1 dynamo. The velocity fluctuations exhibit the parity relative to their resonant surface predicted by linear MHD theory.

引用

页码：566 / 569

页数：4

共 17 条

[1]

ALFVEN H, 1975, ROLE MAGNETIC FIELDS, P179

[2] OBSERVATIONS OF THE MAGNETOHYDRODYNAMIC DYNAMO EFFECT IN A SPHEROMAK PLASMA [J].