Impact of extended preplasma on energy coupling in kilojoule energy relativistic laser interaction with cone wire targets relevant to fast ignition oleh T Yabuuchi, R Mishra, C McGuffey, B Qiao, M S Wei, H Sawada, Y Sentoku, T Ma, D P Higginson, K U Akli, D Batani, H Chen, L A Gizzi, M H Key, A J Mackinnon, H S McLean, P A Norreys, P K Patel, R B Stephens, Y Ping, W Theobald, C Stoeckl, F N Beg