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Rotations of bulk ions and impurities in non-axisymmetric toroidal systems

Technical Report:

Abstract

Neoclassical rotations are investigated theoretically for a plasma consisting of electrons, bulk ions, and impurities in non-axisymmetric toroidal systems. Impurity ions are assumed to lie in the Pfirsch-Schlueter collisionality regime. The results include the case of tokamaks. It is found that the rotations of impurities are generally different from those of bulk ions. The difference comes from mainly the different diamagnetic flows between bulk ions and impurities. In the 1/{nu} regime or banana regime the gradient of bulk ion temperature may be another cause for the different rotations between the two species. However, in the region where the configuration is far from the axisymmetry the cause of different rotations is just the different diamagnetic flows. As the poloidal rotations depend on the radial electric field contrary to the axisymmetric system, a relationship, which does not include the radial electric field, can be derived between poloidal and toroidal rotations. By estimating this relationship based on the measured rotations the present neoclassical theory can be validated without knowledge of radial electric field. (author).
Publication Date:
Jul 01, 1991
Product Type:
Technical Report
Report Number:
NIFS-102
Reference Number:
SCA: 700330; PA: JPN-91:011157; SN: 92000630573
Resource Relation:
Other Information: PBD: Jul 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CLOSED PLASMA DEVICES; PLASMA IMPURITIES; ROTATION; IONS; TOROIDAL CONFIGURATION; NEOCLASSICAL TRANSPORT THEORY; PLATEAU REGIME; PFIRSCH-SCHLUETER REGIME; 700330; PLASMA KINETICS, TRANSPORT, AND IMPURITIES
OSTI ID:
10109049
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE92750966; TRN: JP9111157
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
JPN
Size:
21 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Nakajima, Noriyoshi, and Okamoto, Masao. Rotations of bulk ions and impurities in non-axisymmetric toroidal systems. Japan: N. p., 1991. Web.
Nakajima, Noriyoshi, & Okamoto, Masao. Rotations of bulk ions and impurities in non-axisymmetric toroidal systems. Japan.
Nakajima, Noriyoshi, and Okamoto, Masao. 1991. "Rotations of bulk ions and impurities in non-axisymmetric toroidal systems." Japan.
@misc{etde_10109049,
title = {Rotations of bulk ions and impurities in non-axisymmetric toroidal systems}
author = {Nakajima, Noriyoshi, and Okamoto, Masao}
abstractNote = {Neoclassical rotations are investigated theoretically for a plasma consisting of electrons, bulk ions, and impurities in non-axisymmetric toroidal systems. Impurity ions are assumed to lie in the Pfirsch-Schlueter collisionality regime. The results include the case of tokamaks. It is found that the rotations of impurities are generally different from those of bulk ions. The difference comes from mainly the different diamagnetic flows between bulk ions and impurities. In the 1/{nu} regime or banana regime the gradient of bulk ion temperature may be another cause for the different rotations between the two species. However, in the region where the configuration is far from the axisymmetry the cause of different rotations is just the different diamagnetic flows. As the poloidal rotations depend on the radial electric field contrary to the axisymmetric system, a relationship, which does not include the radial electric field, can be derived between poloidal and toroidal rotations. By estimating this relationship based on the measured rotations the present neoclassical theory can be validated without knowledge of radial electric field. (author).}
place = {Japan}
year = {1991}
month = {Jul}
}