Abstract
The effect of nonaxisymmetry on Alfen modes toroidal geometry is investigated numerically. A model equation is used which simplified the analysis on the resonant surfaces. Alfen modes, characterized by their poloidal and toroidal node numbers (m, n), are found to exist in moderate nonaxisymmetry as well. For fixed (m, n), however, the mode collapses from a global feature on the resonant surface into an infinitely thin Alfven ballooning mode along a field line if the nonaxisymmetry exceeds a critical thresholds or, with given nonaxisymmetry, if the poloidal variation does so. Alfven baloonings are polarized within the magnetic surfaces and are stable. (orig.).
Citation Formats
Salat, A.
Collapse of Alfven modes into ballooning-type modes due to toroidal nonaxisymmetry.
Germany: N. p.,
1991.
Web.
Salat, A.
Collapse of Alfven modes into ballooning-type modes due to toroidal nonaxisymmetry.
Germany.
Salat, A.
1991.
"Collapse of Alfven modes into ballooning-type modes due to toroidal nonaxisymmetry."
Germany.
@misc{etde_10130888,
title = {Collapse of Alfven modes into ballooning-type modes due to toroidal nonaxisymmetry}
author = {Salat, A}
abstractNote = {The effect of nonaxisymmetry on Alfen modes toroidal geometry is investigated numerically. A model equation is used which simplified the analysis on the resonant surfaces. Alfen modes, characterized by their poloidal and toroidal node numbers (m, n), are found to exist in moderate nonaxisymmetry as well. For fixed (m, n), however, the mode collapses from a global feature on the resonant surface into an infinitely thin Alfven ballooning mode along a field line if the nonaxisymmetry exceeds a critical thresholds or, with given nonaxisymmetry, if the poloidal variation does so. Alfven baloonings are polarized within the magnetic surfaces and are stable. (orig.).}
place = {Germany}
year = {1991}
month = {Nov}
}
title = {Collapse of Alfven modes into ballooning-type modes due to toroidal nonaxisymmetry}
author = {Salat, A}
abstractNote = {The effect of nonaxisymmetry on Alfen modes toroidal geometry is investigated numerically. A model equation is used which simplified the analysis on the resonant surfaces. Alfen modes, characterized by their poloidal and toroidal node numbers (m, n), are found to exist in moderate nonaxisymmetry as well. For fixed (m, n), however, the mode collapses from a global feature on the resonant surface into an infinitely thin Alfven ballooning mode along a field line if the nonaxisymmetry exceeds a critical thresholds or, with given nonaxisymmetry, if the poloidal variation does so. Alfven baloonings are polarized within the magnetic surfaces and are stable. (orig.).}
place = {Germany}
year = {1991}
month = {Nov}
}