Corrections to “Off-Axis Space-Charge Limit for a Bunched Electron Beam in a Coaxial Conducting Structure” [Jun 08 729-734]

We discuss a correction to the Green's function used to calculate the off-axis space charge limit of bunched annular electron beams in coaxial conducting structures. In addition, we discuss how the space-charge limit is affected and update our previous comparison of the experimental design parameters of the UC-Davis/SLAC 2.8-GHz coaxial ubitron oscillator with the space-charge limit.