one more thing i forgot to ask, what does u-u0 represent and how does this show that electrons with velocities u0 close to the phase velocity of the wave have pertubations that grow in time?
Best Wishes
G
I have been given a derivation describing the physics of landau damping, but i don't quite understand it. It starts with the equation for a charged particle in a 1d electric field varying as Eexp[i(kx-wt)] being determined by d2x/dx2=e/m Eexp[i(wt-kx)].
Since we are dealing with a linearized...