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Title: Approximate quasi-isodynamicity at a finite aspect ratio in a stellarator vacuum magnetic field

A stellarator vacuum field is found in which, at a finite aspect ratio (A ≈ 40), the contours of the second adiabatic invariant of nearly all particles reflected inside that surface are poloidally closed.
Authors:
 [1] ; ;  [2]
  1. National Research Centre Kurchatov Institute (Russian Federation)
  2. Max-Planck-Institut für Plasmaphysik (Germany)
Publication Date:
OSTI Identifier:
22472010
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 12; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; ASPECT RATIO; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC FIELDS; POLOIDAL FIELD DIVERTORS; STELLARATORS; SURFACES