Neutral Beam Injection Experiments Research Articles

Stability of shear flow in a magnetized plasma

By studying the eigenmode solutions and by calculating the evolution of an initial wavelet, it is shown that Alfvén waves in a magnetized plasma are stable even if the plasma possesses a longitudinal flow velocity v0 with a strong shear, provided the maximum flow velocity is less than twice the Alfvén speed. This result is discussed in the light of recent neutral beam injection experiments in tokamaks.

Energy loss rates of energetic ions injected into the FM-1 spherator

Energy loss rates of energetic ions were studied during neutral beam injection experiments on the FM-1 spherator. Under typical experimental conditions, the injected beam ions slowed-down on the plasma electrons resulting in electron heating. The measured slowing-down rate was found to be in agreement with classical predictions.