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Report No.

Metal surfaces nanomodifications induced by the single and multiple pulse soft X-ray laser beam irradiations

Faenov, A.*; Pikuz, T.; Ishino, Masahiko; Starikov, S. V.*; Stegailov, V. V.*; Norman, G.*; Fortov, V. E.*; Skobelev, I. Yu.*; Tamotsu, Satoshi*; Tanaka, Momoko; Hasegawa, Noboru; Nishikino, Masaharu; Kaihori, Takeshi*; Kando, Masaki; Kawachi, Tetsuya

A systematic experimental study of the surface modifications resulting from the interactions of both single and multiple SXRL pulses in order to confirm the development of the modified structures during multiple shots irradiation. The interactions between single or multiple picosecond soft X-ray laser (SXRL) beam and metal (such as gold (Au), copper (Cu), and aluminum (Al)) surfaces, were investigated. Our results demonstrate that tensile stress created in metals by short X-ray pulse can produce spallative ablation of target even for drastically small X-ray fluencies, which open new opportunities for material nano processing.



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