On the beta-limit induced by ideal interchange modes in stellarator configurations

Authors
Carreras, BA Lynch, VE Ichiguchi, K Tatsumo, T Wakatani, M
Citation
Ba. Carreras et al., On the beta-limit induced by ideal interchange modes in stellarator configurations, PLAS PHYS R, 25(12), 1999, pp. 958-962
Citations number
12
Categorie Soggetti
Physics
Journal title
PLASMA PHYSICS REPORTS
ISSN journal
1063780X → ACNP
Volume
25
Issue
12
Year of publication
1999
Pages
958 - 962
Database
ISI
SICI code
1063-780X(199912)25:12<958:OTBIBI>2.0.ZU;2-7
Abstract
The theoretically determined ideal interchange beta-limit for stellarator d evices is generally lower than the operational beta values in the experimen t. Usually, these beta-limit determinations are based on the assumption of smooth pressure profiles. However, when staircaselike pressure profiles are considered, the beta-limit increases. These types of profiles may be the r esult of the nonlinear profile modification by the resistive branch of the interchange instability.