• C.M. Scoby, M.S. Gutierrez, J.T. Moody, P. Musumeci, M.T. Westfall
  UCLA, Los Angeles, California

High brightness ultrashort electron beams have been produced at the UCLA Pegasus photoinjector lab for use in time-resolved electron diffraction applications. Beams have been generated with high enough brightness to obtain single shot diffraction patterns of thin solid targets. These beams contain a few pC at 3.5 MeV in a 200 fs pulse. Pump-probe experiments on thin metal foils have already shown promising results on picosecond time scales*. Current research focuses on materials with processes that are observable on the sub-100 fs scale. To overcome rf jitter and synchronization problems, electro-optic sampling is used as a single shot time-of-arrival diagnostic** to help reconstruct the melting "movie."

*P. Musumeci, et al., Rev. Sci. Instrum. 80, 013302 (2009)
**C. Scoby, et al., PR-ST Beams and Accel. 13 (2010)