Destruction of Invariant Surfaces and Magnetic Coordinates for Perturbed Magnetic Fields

Hudson, S.R.

Princeton University. Plasma Physics Laboratory.

关键词: Magnetic Fields;    70 Plasma Physics And Fusion Technology;    Chaos;    Residues;    Magnetic Surfaces;   

DOI  :  10.2172/820204
RP-ID  :  PPPL-3904
RP-ID  :  AC02-76CH03073
RP-ID  :  820204

美国|英语

来源: UNT Digital Library

【 摘 要 】

Straight-field-line coordinates are constructed for nearly integrable magnetic fields. The coordinates are based on the robust, noble-irrational rotational-transform surfaces, whose existence is determined by an application of Greene's residue criterion. A simple method to locate these surfaces is described. Sequences of surfaces with rotational-transform converging to low order rationals maximize the region of straight-field-line coordinates.