We present the first simulation of the effect of Z-mode waves on the outer radiation belt electron dynamics. We calculate bounce-averaged diffusion rates in pitch angle and momentum and then use them as inputs to solve a 2-D momentum-pitch angle diffusion equation. Numerical results show that the phase space density (PSD) of 1 MeV electrons can enhance substantially and very rapidly (e.g., 30 minutes). In particular, the momentum diffusion rate exceeds the pitch angle and cross diffusion rates at 0.5 MeV and above, a behavior completely different from that for EMIC and chorus waves. Consequent...
