Abstract
Energetic ions can drive Alfvén gap modes unstable, causing large losses of fast ions. Toroidicity-induced Alfvén eigenmodes (TAE) were expected to disappear into the shear Alfvén continuum and become stable as the plasma beta increased. Although TAE modes may disappear, another dangerous instability with similar properties but approximately half the TAE frequency appears in a spectral gap that is created by finite beta effects. The measured frequency of the new mode agrees with the theoretical frequency of beta-induced Alfvén eigenmodes.
| Original language | English |
|---|---|
| Pages (from-to) | 855-858 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 71 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1993 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 7 Affordable and Clean Energy
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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