Author: D.A. SPONG.Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
DESTABILIZATION OF TOKAMAK PRESSURE-GRADIENT DRIVEN INSTABILITIES BY ENERGETIC ALPHA POPULATIONS.
Author: D.A. SPONG.Destabilization of Tokamak Pressure-gradient Driven Instabilities by Energetic Alpha Populations
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Alpha particle populations can significantly alter existing MHD in stabilities in tokamaks through kinetic effects and coupling to otherwise stable shear Alfven waves. Here we consider resonances of the trapped alpha precessional drift with both the usual ballooning mode diamagnetic frequency ([omega]{sub *i}/2) and the toroidicity induced Alfven eigenmode (TAE). This is examined for noncircular tokamaks in the high-n ballooning limit using an isotropic alpha slowing down distribution and retaining the full energy and pitch angle dispersion in the alpha drift frequency. Applying this to CIT and ITER indicates that ballooning instabilities can persist at [Beta]'s below the ideal MHD threshold. These are especially dominated by the destabilization of the TAE mode. In addition, a hybrid fluid-particle approach for simulating alpha effects on pressure-gradient driven instabilities is described. 13 refs., 6 figs.
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Energy Research Abstracts
Author: Government Reports Announcements & Index
Author: Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1580
Book Description
Author: J. D. Callen
Author: 
Author: 
Author: