Comment on "Collimated multi-MeV ion beams from high-intensity laser interactions with underdense plasma" - Willingale et al. reply

Willingale, L. and Mangles, S. P. D. and Nilson, P. M. and Clarke, R. J. and Dangor, A. E. and Kaluza, M. C. and Karsch, S. and Lancaster, K. L. and Mori, W. B. and Najmudin, Z. and Schreiber, J. and Thomas, A. G. R. and Wei, M. S. and Krushelnick, K. (2007) Comment on "Collimated multi-MeV ion beams from high-intensity laser interactions with underdense plasma" - Willingale et al. reply. Physical review letters, 98 (4): 049504. ISSN 1079-7114