Momentum transport from nonlinear mode coupling of magnetic fluctuations

Authors
Hansen, AK Almagri, AF Craig, D Den Hartog, DJ Hegna, CC Prager, SC Sarff, JS
Citation
Ak. Hansen et al., Momentum transport from nonlinear mode coupling of magnetic fluctuations, PHYS REV L, 85(16), 2000, pp. 3408-3411
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
16
Year of publication
2000
Pages
3408 - 3411
Database
ISI
SICI code
0031-9007(20001016)85:16<3408:MTFNMC>2.0.ZU;2-E
Abstract
A cause of observed anomalous plasma momentum transport in a reversed-field pinch is determined experimentally. Magnetohydrodynamic theory predicts th at nonlinear interactions involving triplets of tearing modes produce inter nal torques that redistribute momentum. Evidence for the nonlinear torque i s acquired by detecting the correlation of momentum redistribution with the mode triplets, with the elimination of one of the modes in the triplet, an d with the external driving of one of the modes.