TITLE

Global particle-in-cell simulations of plasma pressure effects on Alfvénic modes

AUTHOR(S)
Mishchenko, Alexey; Könies, Axel; Hatzky, Roman
PUB. DATE
January 2011
SOURCE
Physics of Plasmas;Jan2011, Vol. 18 Issue 1, p012504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Global linear gyrokinetic particle-in-cell simulations of electromagnetic modes in realistic tokamak geometry are reported. The effect of plasma pressure on Alfvénic modes is studied. It is shown that the fast-particle pressure can considerably affect the shear Alfvén wave continuum structure and hence the toroidicity-induced gap in the continuum. It is also found that the energetic ions can substantially reduce the growth rate of the ballooning modes (and perhaps completely stabilize them in a certain parameter range). Ballooning modes are found to be the dominant instabilities if the bulk-plasma pressure gradient is large enough.
ACCESSION #
57679399

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics