Comparisons of different bootstrap current expressions
The aim of this paper is to provide an expression for the bootstrap current that is valid for finite aspect ratio and all values of the collisionality parameter. A simple interpolating formula is considered, which reduces to the Hinton and Hazeltine expression for large aspect ratio and to the Hirshman expression as the collisionality parameter tends to zero. The predictions of these expressions are calculated for a particular Tore-Supra shot and the causes of the differences are examined. Estimates for typical fusion plasmas are then given.
Bibliographic Reference: Report: EUR-CEA-FC-1436 EN (1991) 16 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199210406 / Last updated on: 1994-12-02
Original language: en
Available languages: en