Incompressibility of impurity flows in low density TJ-II plasmas and comparison with neoclassical theory

被引：35

作者：

Arevalo, J. ^{[1
]}

Alonso, J. A. ^{[1
]}

McCarthy, K. J. ^{[1
]}

Velasco, J. L. ^{[1
]}

机构：

[1] Asociac Euratom Ciemat, Lab Nacl Fus, Madrid, Spain

来源：

NUCLEAR FUSION | 2013年 / 53卷 / 02期

关键词：

RADIAL ELECTRIC-FIELD; POLOIDAL ROTATION; TRANSPORT; CONFINEMENT; COEFFICIENTS;

D O I：

10.1088/0029-5515/53/2/023003

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：

Poloidal and toroidal velocities of fully ionized carbon are measured by means of charge exchange recombination spectroscopy in the TJ-II stellarator. We present a detailed treatment of the 3D geometry and show that flow measurements, performed at different locations of the same flux surface, are compatible with flow incompressibility for the low density plasmas under study (line averaged electron densities (n) over bar (e) <= 10(19) m(-3)). Furthermore, comparison with neoclassical calculations shows quantitative agreement with the measured radial electric field and ion parallel mass flow in the absence of an external momentum input.

引用

页数：9

共 40 条

[1] Impurity temperature correction factors for the transmission grating spectrometer in the TJ-II stellarator [J].