Submicron ionography of nanostructures using a femtosecond- laser-driven-cluster-based source

Faenov, A. Y.; Pikuz, T. A.*; Fukuda, Yuji; Kando, Masaki; Kotaki, Hideyuki; Homma, Takayuki; Kawase, Keigo; Kameshima, Takashi*; Pirozhkov, A. S.; Yogo, Akifumi; Tampo, Motonobu; Mori, Michiaki; Sakaki, Hironao; Hayashi, Yukio; Nakamura, Tatsufumi; Pikuz, S. A.*; Skobelev, I. Yu.*; Gasilov, S. V.*; Giulietti, A.*; Cecchetti, C. A.*; Boldarev, A. S.*; Gasilov, V. A.*; Magunov, A.*; Kar, S.*; Borghesi, M.*; Bolton, P.; Daido, Hiroyuki; Tajima, Toshiki; Kato, Yoshiaki* ; Bulanov, S. V.

An intense isotropic source of multicharged carbon and oxygen ions with energy above 300 keV and high quantity per shot was obtained by femtosecond Ti:Sa laser irradiation of clusters, produced by expansion of the mixed He and CO gases in a supersonic nozzle. The source was employed for high contrast ionography images with 600 nm spatial resolution. A difference in object thickness of 100 nm was well resolved for both Zr and polymer foils.