Evolution of Relativistic Plasma Wave Front in LWFA Lopes, N. C. ; Clayton, C. E. ; Fang, F. ; Joshi, C. ; Marsh, K. A. ; Pak, A. E. ; Ralph, J. E. Abstract Publication: 22nd Particle Accelerator Conference (PAC 07) Pub Date: 2007 Bibcode: 2007pac..conf.1919L