学術雑誌論文 Formation of x-ray Newton’s rings from nano-scale spallation shells of metals in laser ablation

錦野, 将元  ,  長谷川, 登  ,  河内, 哲哉

7 ( 1 )  , p.015311 , 2017-01 , AIP
内容記述
The initial stages of the femtosecond (fs) laser ablation process of gold, platinum, and tungsten were observed by single-shot soft x-ray imaging technique. The formation and evolution of soft x-ray Newton's rings (NRs) were found for the first time. The soft x-ray NRs are caused by the interference between the bulk ablated surface and nanometer-scale thin spallation layer; they originate from the metal surface at pump energy fluence of around 1 J/cm^2 and work as a flying soft x-ray beam splitter.

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