Control of laser-accelerated proton beams by modifying the target density with ASE A. Yogo, H. Kiriyama, M. Mori, T. Zh. Esirkepov, K. Ogura, A. Sagisaka, S. Orimo, M. Nishiuchi, A. S. Pirozhkov, H. Nagatomo et al. (11 more) Eur. Phys. J. D, 55 2 (2009) 421-425 Published online: 13 February 2009 DOI: 10.1140/epjd/e2009-00045-5