Femtosecond Laser Ablation of Crystalline Iron: Experimental Investigation and Molecular Dynamics Simulation
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概要
- 論文の詳細を見る
We report the ablation of crystalline iron (Fe) by a femtosecond laser examined both experimentally and theoretically. Laser ablation of Fe is investigated theoretically by a molecular dynamics (MD) simulation model. In the model, the electron system is taken into account. The dependence of the laser fluence on the ablation process is numerically simulated. The ablation rate achieved experimentally is well predicted at fluences just above the ablation threshold of 0.18 J/cm2. In addition, as a result of the X-ray diffraction (XRD) measurement of the ablated surface, the grain sizes of the surface become smaller. The heat-affected zone is experimentally observed even with lower fluence irradiation than the ablation threshold fluence of 0.18 J/cm2, while at higher laser fluences than the ablation threshold it is measured to be less than 1 μm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-02-15
著者
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Obara Minoru
Department Of Electrical Engineering Faculty Of Engineering Keio University
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Atanasov P.
Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd, Sofia 1784, Bulgaria
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Hirayama Yoichi
Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Nedialkov N.
Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd, Sofia 1784, Bulgaria
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Imamova S.
Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd, Sofia 1784, Bulgaria
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