Introduction to Alfven modes
Introduction to the interaction between energetic particles and Alfven eigenmodes in toroidal plasmas..Y. Todo Dec,2018
https://link.springer.com/article/10.1007/s41614-018-0022-9
complicated...
but then so is Wyttenbach's hypothesis of the rotator collapse mechanism
in lithium/nickel/hydrogen LENR
"" The occurrence of an Alfven sheer wave condition, that helps to stabilize the toroidally distorted Li electron orbits is highly likely""