A  Zigler, Palchan, T , Bruner, N , Schleifer, E , Eisenmann, S , Botton, M , Henis, Z , Pikuz, SA , Jr, AY Faenov, Gordon, D , and others, . 2011. ?5.5?7.5 Mev Proton Generation By A Moderate-Intensity Ultrashort-Pulse Laser Interaction With H 2 O Nanowire Targets?. Physical Review Letters, 106, Pp. 134801.