Radial structure of Reynolds stress in the plasma boundary of tokamak plasmas

Authors
Hidalgo, C Silva, C Pedrosa, MA Sanchez, E Fernandes, H Varandas, CAF
Citation
C. Hidalgo et al., Radial structure of Reynolds stress in the plasma boundary of tokamak plasmas, PHYS REV L, 83(11), 1999, pp. 2203-2205
Citations number
27
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
11
Year of publication
1999
Pages
2203 - 2205
Database
ISI
SICI code
0031-9007(19990913)83:11<2203:RSORSI>2.0.ZU;2-Q
Abstract
The radial profile of Reynolds stress has been measured in the plasma bound ary region of the ISTTOK tokamak using a multiarray of Langmuir probes. The electrostatic Reynolds stress component, proportional to the cross correla tion of radial and poloidal fluctuating electric fields, shows a radial gra dient close to the velocity shear layer location. It is shown that this mec hanism may drive significant poloidal flows in the plasma boundary region.