Momentum, Energy, and Angular Distributions

The left plot shows the distribution of electrons over p_x and p_trans. The right plot shows the distribution of electrons over kinetic energy (including the subtraction of the rest mass) and momentum angle. I've included data upto 250 fs, past this the simulation gets a bit sketchy, but you can clearly see bunching at around 5 or 6 degrees. This angle is likely to be an over estimate of the lab frame divergence angle of the electron beams due to relativistic effects, so it's not a terrible match for you 2 degrees. I'm not sure about the energy distribution though.

The numbers on the colorbars are not accurate as I need to account for the z-dimension as this is from 2D data, this is a fixed number and so it won't change the distribution except for a fixed multiplying factor.