Va. Balakirev et al., EXCITATION OF WAKE FIELDS BY RELATIVISTIC ELECTRON BUNCHES IN A PLASMA WITH RADIAL DENSITY VARIATION, Plasma physics reports, 23(4), 1997, pp. 290-298
The optimum conditions for the excitation of wake fields by relativist
ic electron bunches in a plasma are considered. The plasma and bunch p
arameters corresponding to the most efficient excitation of wake field
s are determined. The effect of the finite radial plasma dimension on
the excitation efficiency of the wake fields is studied. The excitatio
n of wake fields by a bunch propagating in a preformed vacuum channel
in a plasma is analyzed.