Ions lost on their first orbit can impact Alfvén eigenmode stability
- Author(s): Heidbrink, WW
- Fu, GY
- Van Zeeland, MA
- et al.
Published Web Locationhttps://doi.org/10.1063/1.4928436
© 2015 AIP Publishing LLC. Some neutral-beam ions are deflected onto loss orbits by Alfvén eigenmodes on their first bounce orbit. The resonance condition for these ions differs from the usual resonance condition for a confined fast ion. Estimates indicate that particles on single-pass loss orbits transfer enough energy to the wave to alter mode stability.