Anisotropic Pressure, Transport, and Shielding of Magnetic Perturbations

Boozer, H.E. Mynick and A.H.

Princeton University. Plasma Physics Laboratory.

关键词: Amplification;    Equilibrium, Mhd-Toroidal;    Shielding;    70 Plasma Physics And Fusion Technology;    Anisotropy;   

DOI  :  10.2172/960291
RP-ID  :  PPPL-4318
RP-ID  :  DE-ACO2-76CHO3073
RP-ID  :  960291

美国|英语

来源: UNT Digital Library

【 摘 要 】

We compute the effect on a tokamak of applying a nonaxisymmetric magnetic perturbation δΒ. An equilibrium with scalar pressure p yields zero net radial current, and therefore zero torque. Thus, the usual approach, which assumes scalar pressure, is not self-consistent, and masks the close connection which exists between that radial current and the in-surface currents, which provide shielding or amplification of δΒ. Here, we analytically compute the pressure anisoptropy, anisoptropy, pll, p⊥ ≠ p, and from this, both the radial and in-surface currents. The surface-average of the radial current recovers earlier expressions for ripple transport, while the in-surface currents provide an expression for the amount of self-consistent shielding the plasma provides.