Progress on laser plasma accelerator development using transversely and longitudinally shaped plasmas.

W.P. Leemans, E. Esarey, C.G.R. Geddes, Cs. Toth, C.B. Schroeder, K. Nakamura, A.J. Gonsalves, D. Panasenko, E. Cormier-Michel, G.R. Plateau, C. Lin, D.L. Bruhwiler and J.R. Cary, “Progress on laser plasma accelerator development using transversely and longitudinally shaped plasmas,” Comptes Rendus Physique 10, p. 130 (2010).