Poloidal velocity of impurity ions in neoclassical theory

Journal Article · Fri Aug 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2969438· OSTI ID:21120517

Wong, S K; Chan, V S ^[1]; Solomon, W M ^[2]

---

1. General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)
2. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

A formula for the poloidal velocity of impurity ions in a two-species plasma is derived from neoclassical theory in the banana regime, with corrections from the boundary layer separating the trapped and transiting ions. The formula is applicable to plasmas with toroidal rotations that can approach the thermal speeds of the ions. Using the formula to determine the poloidal velocity of C{sup +6} ions in a recently reported experiment [W. M. Solomon et al., Phys. Plasmas 13, 056116 (2006)] leads to agreement in the direction of the central region when it is otherwise from theories without strong toroidal rotations. Comparisons among these theories are made, demonstrating the degree of uncertainty of theoretical predictions.

• OSTI ID: 21120517
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BANANA REGIME
BOUNDARY LAYERS
CARBON IONS
COMPARATIVE EVALUATIONS
NEOCLASSICAL TRANSPORT THEORY
PLASMA
PLASMA IMPURITIES
VELOCITY