Anisotropic Pressure, Transport, and Shielding of Magnetic Perturbations

H.E. Mynick and A.H. Boozer

关键词: AMPLIFICATION;    ANISOTROPY;    PLASMA;    SCALARS;    SHIELDING;    TORQUE;    TRANSPORT Equilibrium;    MHD-Toroidal;    Ripple Effect;    Transport Theory;   

DOI  :  10.2172/960291
RP-ID  :  PPPL-4318
PID  :  OSTI ID: 960291
Others  :  TRN: US0904421

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 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.