Observation of the femto-second laser ablation dynamics of metals by using the soft X-ray probe, 1

Hasegawa, Noboru; Nishikino, Masaharu; Tomita, Takuro*; Eyama, Tsuyoshi*; Kakimoto, Naoya*; Hatomi, Daiki*; Onishi, Naofumi*; Ito, Atsushi*; Minami, Yasuo*; Takei, Ryota*; Baba, Motoyoshi*; Kawachi, Tetsuya; Yamagiwa, Mitsuru; Suemoto, Toru

We have observed the temporal evolution of the femto-second laser irradiated metal surface by using the soft X-ray laser probe at the wavelength of 13.9 nm. We have succeeded to obtain the temporal evolution of the ablation front from the result of the soft X-ray reflective imaging and interferogram. We will report about "the Newton's ring generated between the ablation front and the metal surface" and "the ablation front dynamics observed by the soft X-ray shadow graph".